642347204 has 24 divisors (see below), whose sum is σ = 1134981120. Its totient is φ = 318076416.

The previous prime is 642347203. The next prime is 642347207. The reversal of 642347204 is 402743246.

It is not an unprimeable number, because it can be changed into a prime (642347203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527204 + ... + 528420.

It is an arithmetic number, because the mean of its divisors is an integer number (47290880).

Almost surely, 2^642347204 is an apocalyptic number.

It is an amenable number.

642347204 is a deficient number, since it is larger than the sum of its proper divisors (492633916).

642347204 is a wasteful number, since it uses less digits than its factorization.

642347204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2387 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 642347204 is about 25344.5695169596. The cubic root of 642347204 is about 862.8261110585.

The spelling of 642347204 in words is "six hundred forty-two million, three hundred forty-seven thousand, two hundred four".