642333524 has 24 divisors (see below), whose sum is σ = 1291774848. Its totient is φ = 273762720.

The previous prime is 642333493. The next prime is 642333539. The reversal of 642333524 is 425333246.

It is a congruent number.

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, 58304 + ... + 68439.

It is an arithmetic number, because the mean of its divisors is an integer number (53823952).

Almost surely, 2^642333524 is an apocalyptic number.

It is an amenable number.

642333524 is an abundant number, since it is smaller than the sum of its proper divisors (649441324).

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

642333524 is a wasteful number, since it uses less digits than its factorization.

642333524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126935 (or 126933 counting only the distinct ones).

The product of its digits is 51840, while the sum is 32.

The square root of 642333524 is about 25344.2996352237. The cubic root of 642333524 is about 862.8199858431.

The spelling of 642333524 in words is "six hundred forty-two million, three hundred thirty-three thousand, five hundred twenty-four".