642554296 has 32 divisors (see below), whose sum is σ = 1260463680. Its totient is φ = 306764800.

The previous prime is 642554239. The next prime is 642554303. The reversal of 642554296 is 692455246.

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, 5425 + ... + 36256.

It is an arithmetic number, because the mean of its divisors is an integer number (39389490).

Almost surely, 2^642554296 is an apocalyptic number.

It is an amenable number.

642554296 is a deficient number, since it is larger than the sum of its proper divisors (617909384).

642554296 is a wasteful number, since it uses less digits than its factorization.

642554296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41775 (or 41771 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 642554296 is about 25348.6547177557. The cubic root of 642554296 is about 862.9188258109.

The spelling of 642554296 in words is "six hundred forty-two million, five hundred fifty-four thousand, two hundred ninety-six".