121525313531142 has 32 divisors (see below), whose sum is σ = 264664929657600. Its totient is φ = 37053090150048.

The previous prime is 121525313531137. The next prime is 121525313531201. The reversal of 121525313531142 is 241135313525121.

It is a self number, because there is not a number n which added to its sum of digits gives 121525313531142.

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, 18379505698 + ... + 18379512309.

It is an arithmetic number, because the mean of its divisors is an integer number (8270779051800).

Almost surely, 2^{121525313531142} is an apocalyptic number.

121525313531142 is an abundant number, since it is smaller than the sum of its proper divisors (143139616126458).

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

121525313531142 is a wasteful number, since it uses less digits than its factorization.

121525313531142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36759018060.

The product of its digits is 108000, while the sum is 39.

The spelling of 121525313531142 in words is "one hundred twenty-one trillion, five hundred twenty-five billion, three hundred thirteen million, five hundred thirty-one thousand, one hundred forty-two".