255707242 has 64 divisors (see below), whose sum is σ = 467470080. Its totient is φ = 102643200.

The previous prime is 255707237. The next prime is 255707267. The reversal of 255707242 is 242707552.

It is a happy number.

It is a super-2 number, since 2×255707242² = 130772387222493128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255707198 and 255707207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2345884 + ... + 2345992.

It is an arithmetic number, because the mean of its divisors is an integer number (7304220).

Almost surely, 2^255707242 is an apocalyptic number.

255707242 is a deficient number, since it is larger than the sum of its proper divisors (211762838).

255707242 is a wasteful number, since it uses less digits than its factorization.

255707242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 255707242 is about 15990.8486954258. The cubic root of 255707242 is about 634.7182845266.

The spelling of 255707242 in words is "two hundred fifty-five million, seven hundred seven thousand, two hundred forty-two".