251023324404142 has 32 divisors (see below), whose sum is σ = 411546640921344. Its totient is φ = 114317533632000.

The previous prime is 251023324404107. The next prime is 251023324404169. The reversal of 251023324404142 is 241404423320152.

It is a super-2 number, since 2×251023324404142² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383089392 + ... + 383744092.

It is an arithmetic number, because the mean of its divisors is an integer number (12860832528792).

Almost surely, 2^{251023324404142} is an apocalyptic number.

251023324404142 is a deficient number, since it is larger than the sum of its proper divisors (160523316517202).

251023324404142 is a wasteful number, since it uses less digits than its factorization.

251023324404142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018524.

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 251023324404142 its reverse (241404423320152), we get a palindrome (492427747724294).

The spelling of 251023324404142 in words is "two hundred fifty-one trillion, twenty-three billion, three hundred twenty-four million, four hundred four thousand, one hundred forty-two".