124 (number): Difference between revisions
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==In mathematics== |
==In mathematics== |
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[[File:StellaOctangulaNumber.jpg|thumb|124 [[Neodymium magnet toys|magnetic balls]] arranged into the shape of a [[stella octangula]]]] |
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'''124''' is the sum of eight consecutive primes (5 + 7 + 11 + 13 + 17 + 19 + 23 + 29). It is a [[nontotient]] since there is no integer with 124 coprimes below it. It is an [[untouchable number]] since there is no integer whose proper [[divisor]]s add up to 124.<ref>{{Cite web|url=https://oeis.org/A005114|title=Sloane's A005114 : Untouchable numbers|last=|first=|date=|website=The On-Line Encyclopedia of Integer Sequences|publisher=OEIS Foundation|access-date=2016-05-27}}</ref> |
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124 is an [[untouchable number]], meaning that it is not the sum of proper divisors of any positive number.<ref>{{cite OEIS|A005114|Untouchable numbers, also called nonaliquot numbers: impossible values for the sum of aliquot parts function}}</ref> |
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It is a [[stella octangula number]], the number of spheres packed in the shape of a [[stellated octahedron]].<ref>{{cite OEIS|A007588|Stella octangula numbers}}</ref> It is also an [[icosahedral number]].<ref>{{cite OEIS|A006564|Icosahedral numbers}}</ref> |
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In base 5 it is a [[repdigit]] (444<sub>5</sub>). |
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There are 124 different polygons of length 12 formed by edges of the [[integer lattice]], counting two polygons as the same only when one is a translated copy of the other.<ref>{{cite OEIS|A002931|Number of self-avoiding polygons of length 2n on square lattice (not allowing rotations)}}</ref> |
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==In the military== |
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* [[AN/FPS-124]] [[radar]] system used by the United States and Canada military via [[NORAD]] |
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* [[C-124 Globemaster II|Douglas C-124 Globemaster II]] was a heavy-lift [[military transport]] aircraft |
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* [[Sikorsky Aircraft|Sikorsky]] CH-124 Sea King twin-engined anti-submarine warfare (ASW) [[helicopter]] |
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* [[US Air Force]]'s 124th Wing [[Air National Guard]] unit based out of Gowen Field, [[Boise]], [[Idaho]] |
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* {{USNS|Mission San Gabriel|AO-124}} [[USNS Mission Buenaventura|''Mission Buenaventura'']]-class [[Oiler (ship)|fleet oilers]] during World War II |
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* {{USS|Threat|AM-124}} was a [[United States Navy]] {{sclass-|Auk|minesweeper}} |
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* [[VF-124|VF-124 Gunfighters]] was the pacific fleet [[F-8 Crusader|F-8]] |
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* [[VMA-124|Marine Attack Squadron 124]] was a fighter squadron in the [[Marine Forces Reserve|United States Marine Forces Reserve]] based out of Naval Air Station [[Memphis, Tennessee|Memphis]] |
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* The medical [[emergency telephone number]] in [[Bosnia and Herzegovina]] |
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124 is a perfectly partitioned number, meaning that it divides the [[partition number|number of partitions]] of 124. It is the first number to do so after 1, 2, and 3.<ref>{{cite OEIS|A051177|Perfectly partitioned numbers: numbers k that divide the number of partitions p(k)}}</ref> |
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==In transportation== |
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* The [[Fiat 124|Fiat 124 Sedan]] produced from 1966 to 1974 |
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* The [[Fiat 124 Coupé]] produced from 1967 to 1975 |
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* The [[Fiat 124 Sport Spider]] [[convertible (car)|convertible]] produced from 1966 to 1985 |
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* The [[Mercedes-Benz W124]] produced from 1984 to 1997 |
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* [[London Buses route 124]] is a [[Transport for London]] contracted bus route in London |
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* [[STS-124]] was a [[Space Shuttle Discovery|Space Shuttle ''Discovery'']] mission to the [[International Space Station]] in 2008 |
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* The [[Antonov An-124]] heavy lift aircraft |
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==In |
== In science == |
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124 is the [[atomic number]] of [[unbiquadium]], a hypothetical [[superactinide]] element. |
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124 is also: |
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* 124 AH is a year in the [[Islamic calendar]] that corresponds to 741–742 [[Common Era|CE]] |
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* [[124 Alkeste]] is a [[Main belt]] [[asteroid]] discovered in 1872 |
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* The [[atomic number]] of the yet-to-be-discovered element [[unbiquadium]] |
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* [[Tellurium-124]] is a stable [[isotope]] of [[tellurium]] |
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* [[Sonnet 124]] by [[William Shakespeare]] |
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==See also== |
==See also== |
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* [[124th (disambiguation)]] |
* [[124th (disambiguation)]] |
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* [[List of highways numbered 124]] |
* [[List of highways numbered 124]] |
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* {{In title|124}} |
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* [[United Nations Security Council Resolution 124]] |
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== References == |
== References == |
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Latest revision as of 19:26, 13 August 2024
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|---|---|---|---|---|
| Cardinal | one hundred twenty-four | |||
| Ordinal | 124th (one hundred twenty-fourth) | |||
| Factorization | 22 × 31 | |||
| Divisors | 1, 2, 4, 31, 62, 124 | |||
| Greek numeral | ΡΚΔ´ | |||
| Roman numeral | CXXIV, cxxiv | |||
| Binary | 11111002 | |||
| Ternary | 111213 | |||
| Senary | 3246 | |||
| Octal | 1748 | |||
| Duodecimal | A412 | |||
| Hexadecimal | 7C16 | |||
124 (one hundred [and] twenty-four) is the natural number following 123 and preceding 125.
In mathematics
[edit]
124 is an untouchable number, meaning that it is not the sum of proper divisors of any positive number.[1]
It is a stella octangula number, the number of spheres packed in the shape of a stellated octahedron.[2] It is also an icosahedral number.[3]
There are 124 different polygons of length 12 formed by edges of the integer lattice, counting two polygons as the same only when one is a translated copy of the other.[4]
124 is a perfectly partitioned number, meaning that it divides the number of partitions of 124. It is the first number to do so after 1, 2, and 3.[5]
In science
[edit]124 is the atomic number of unbiquadium, a hypothetical superactinide element.
See also
[edit]- The year AD 124 or 124 BC
- 124th (disambiguation)
- List of highways numbered 124
- All pages with titles containing 124
References
[edit]- ^ Sloane, N. J. A. (ed.). "Sequence A005114 (Untouchable numbers, also called nonaliquot numbers: impossible values for the sum of aliquot parts function)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A007588 (Stella octangula numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A006564 (Icosahedral numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A002931 (Number of self-avoiding polygons of length 2n on square lattice (not allowing rotations))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A051177 (Perfectly partitioned numbers: numbers k that divide the number of partitions p(k))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.