642032 has 10 divisors (see below), whose sum is σ = 1243968. Its totient is φ = 321008.

The previous prime is 642013. The next prime is 642049. The reversal of 642032 is 230246.

It is a self number, because there is not a number n which added to its sum of digits gives 642032.

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 642032.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20048 + ... + 20079.

2⁶⁴²⁰³² is an apocalyptic number.

It is an amenable number.

642032 is a deficient number, since it is larger than the sum of its proper divisors (601936).

642032 is a wasteful number, since it uses less digits than its factorization.

642032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40135 (or 40129 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 642032 is about 801.2689935346. The cubic root of 642032 is about 86.2684956484.

Adding to 642032 its reverse (230246), we get a palindrome (872278).

The spelling of 642032 in words is "six hundred forty-two thousand, thirty-two".