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From Wikipedia, the free encyclopedia

242 (two hundred [and] forty-two) is the natural number following 241 and preceding 243.

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Transcription

In mathematics

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.

In other fields

242 is also:

References

  1. ^ R. K. Guy Unsolved Problems in Number Theory, section B18.
  2. ^ D. Wells, The Penguin Dictionary of Curious and Interesting Numbers, Penguin Books, NY, 1986: 147, 176.
This page was last edited on 28 May 2019, at 14:10
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