242 (number): Difference between revisions
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'''242''' ('''two hundred [and] forty-two''') is the [[natural number]] following [[241 (number)|241]] and preceding [[243 (number)|243]]. |
'''242''' ('''two hundred [and] forty-two''') is the [[natural number]] following [[241 (number)|241]] and preceding [[243 (number)|243]]. |
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==In mathematics== |
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242 is the smallest integer to start a run of four consecutive integers with the same number of divisors.<ref>R. K. Guy ''Unsolved Problems in Number Theory'', section B18.</ref><ref>D. Wells, ''[[The Penguin Dictionary of Curious and Interesting Numbers]],'' Penguin Books, NY, 1986: 147, 176.</ref> |
242 is the smallest integer to start a run of four consecutive integers with the same number of divisors.<ref>R. K. Guy ''Unsolved Problems in Number Theory'', section B18.</ref><ref>D. Wells, ''[[The Penguin Dictionary of Curious and Interesting Numbers]],'' Penguin Books, NY, 1986: 147, 176.</ref> |
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242 is a [[palindrome]]. |
242 is a [[palindrome]]. |
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242 is the number of parallelogram polyominoes with 8 cells.<ref>{{cite OEIS|A006958|Number of parallelogram polyominoes with n cells (also called staircase polyominoes, although that term is overused)}}</ref> |
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==In other fields== |
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242 is also: |
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242 is the difference between [[355 (number)|355]] and [[113 (number)|113]], two numbers used in an [[approximation]] of [[pi]], |
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*part of the name of a Belgian [[electronic body music]] group called [[Front 242]] |
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*the number of a notable UN Security Council resolution pertaining to the Arab/Israeli conflict, [[United Nations Security Council Resolution 242]] |
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<math>\frac {355}{113} = 3.14159292035 \ldots</math> |
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*the [[telephone numbering plan|area code]] of [[The Bahamas]] located in the North West Atlantic Ocean. |
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*[[Volvo 242]] (2xx-series, 4-cylinder, 2-door) Produced from 1974-1984.5 |
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(This fraction is slightly larger than <math>\pi</math>, by a factor of around <math>0.000000266764\dots</math>) |
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*A rumoured time for the release of Radiohead's pre-sale for their 2012 tour. |
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*the total number of [http://www.mariowiki.com/Power_Star Power Stars] a player can collect in ''[[Super Mario Galaxy]]'' and ''[[Super Mario Galaxy 2]]'' for the [[Wii]]. |
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242 is the sum of [[Polytope#Elements|elements]] in a [[5-orthoplex]]: 32 [[polychora]], 80 [[Polytope#Elements|cells]], 80 [[Face (geometry)|faces]], 40 [[Edge (geometry)|edges]], and 10 [[Vertex (geometry)|vertices]]. |
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*the orbit, in days, of [[Kepler-69c]], a planet 70 percent larger than the size of Earth, orbiting in the habitable zone of a star similar to our sun. Astronomers are uncertain about the composition of Kepler-69c, but its orbit of 242 days around a sun-like star resembles that of our neighboring planet Venus. |
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==References== |
==References== |
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{{reflist}} |
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<references/> |
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{{Integers|2}} |
{{Integers|2}} |
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Latest revision as of 17:31, 9 June 2024
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|---|---|---|---|---|
| Cardinal | two hundred forty-two | |||
| Ordinal | 242nd (two hundred forty-second) | |||
| Factorization | 2 × 112 | |||
| Greek numeral | ΣΜΒ´ | |||
| Roman numeral | CCXLII | |||
| Binary | 111100102 | |||
| Ternary | 222223 | |||
| Senary | 10426 | |||
| Octal | 3628 | |||
| Duodecimal | 18212 | |||
| Hexadecimal | F216 | |||
242 (two hundred [and] forty-two) is the natural number following 241 and preceding 243.
242 is the smallest integer to start a run of four consecutive integers with the same number of divisors.[1][2]
242 is a nontotient since there is no integer with 242 coprimes below it.
242 is a palindrome.
242 is the number of parallelogram polyominoes with 8 cells.[3]
242 is the difference between 355 and 113, two numbers used in an approximation of pi,
(This fraction is slightly larger than , by a factor of around )
242 is the sum of elements in a 5-orthoplex: 32 polychora, 80 cells, 80 faces, 40 edges, and 10 vertices.
References
[edit]- ^ R. K. Guy Unsolved Problems in Number Theory, section B18.
- ^ D. Wells, The Penguin Dictionary of Curious and Interesting Numbers, Penguin Books, NY, 1986: 147, 176.
- ^ Sloane, N. J. A. (ed.). "Sequence A006958 (Number of parallelogram polyominoes with n cells (also called staircase polyominoes, although that term is overused))". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
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