642634125202 has 16 divisors (see below), whose sum is σ = 977566931712. Its totient is φ = 316778842240.

The previous prime is 642634125193. The next prime is 642634125233. The reversal of 642634125202 is 202521436246.

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, 4200903 + ... + 4351189.

It is an arithmetic number, because the mean of its divisors is an integer number (61097933232).

Almost surely, 2^642634125202 is an apocalyptic number.

642634125202 is a deficient number, since it is larger than the sum of its proper divisors (334932806510).

642634125202 is a wasteful number, since it uses less digits than its factorization.

642634125202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180473.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 642634125202 in words is "six hundred forty-two billion, six hundred thirty-four million, one hundred twenty-five thousand, two hundred two".