642932 has 12 divisors (see below), whose sum is σ = 1142400. Its totient is φ = 316536.

The previous prime is 642931. The next prime is 642937. The reversal of 642932 is 239246.

642932 = T₂₃ + T₂₄ + ... + T₁₅₆.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 642932.

It is not an unprimeable number, because it can be changed into a prime (642931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932 + ... + 1467.

It is an arithmetic number, because the mean of its divisors is an integer number (95200).

2⁶⁴²⁹³² is an apocalyptic number.

It is an amenable number.

642932 is a deficient number, since it is larger than the sum of its proper divisors (499468).

642932 is a wasteful number, since it uses less digits than its factorization.

642932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2468 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 642932 is about 801.8304060087. The cubic root of 642932 is about 86.3087871993.

The spelling of 642932 in words is "six hundred forty-two thousand, nine hundred thirty-two".