251310036042 has 48 divisors (see below), whose sum is σ = 587921338368. Its totient is φ = 77124241440.

The previous prime is 251310036037. The next prime is 251310036071. The reversal of 251310036042 is 240630013152.

251310036042 is a `hidden beast` number, since 2 + 51 + 3 + 1 + 0 + 0 + 3 + 604 + 2 = 666.

251310036042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 251310035997 and 251310036015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1312434 + ... + 1491677.

It is an arithmetic number, because the mean of its divisors is an integer number (12248361216).

Almost surely, 2^251310036042 is an apocalyptic number.

251310036042 is an abundant number, since it is smaller than the sum of its proper divisors (336611302326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251310036042 is a wasteful number, since it uses less digits than its factorization.

251310036042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804515 (or 2804512 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 251310036042 its reverse (240630013152), we get a palindrome (491940049194).

The spelling of 251310036042 in words is "two hundred fifty-one billion, three hundred ten million, thirty-six thousand, forty-two".