242 (number)

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.

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.

242 is the difference between 355 and 113, two numbers used in an approximation of pi,

$$\frac {355}{113} = 3.14159292035 \ldots$$

(This fraction is slightly larger than $$\pi$$, by a factor of around $$0.000000266764\dots$$)

242 is the sum of elements in a 5-orthoplex: 32 polychora, 80 cells, 80 faces, 40 edges, and 10 vertices.