251602042 has 16 divisors (see below), whose sum is σ = 380449440. Its totient is φ = 124789392.

The previous prime is 251601997. The next prime is 251602051. The reversal of 251602042 is 240206152.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229648 + ... + 230740.

It is an arithmetic number, because the mean of its divisors is an integer number (23778090).

Almost surely, 2^251602042 is an apocalyptic number.

251602042 is a deficient number, since it is larger than the sum of its proper divisors (128847398).

251602042 is a wasteful number, since it uses less digits than its factorization.

251602042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 251602042 is about 15861.9684150486. The cubic root of 251602042 is about 631.3032917528.

Adding to 251602042 its reverse (240206152), we get a palindrome (491808194).

The spelling of 251602042 in words is "two hundred fifty-one million, six hundred two thousand, forty-two".