642276032 has 14 divisors (see below), whose sum is σ = 1274516628. Its totient is φ = 321137984.

The previous prime is 642276023. The next prime is 642276043. The reversal of 642276032 is 230672246.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 642276032.

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, 5017718 + ... + 5017845.

It is an arithmetic number, because the mean of its divisors is an integer number (91036902).

Almost surely, 2^642276032 is an apocalyptic number.

It is an amenable number.

642276032 is a deficient number, since it is larger than the sum of its proper divisors (632240596).

642276032 is a wasteful number, since it uses less digits than its factorization.

642276032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035575 (or 10035565 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 642276032 is about 25343.1653902980. The cubic root of 642276032 is about 862.7942428685.

The spelling of 642276032 in words is "six hundred forty-two million, two hundred seventy-six thousand, thirty-two".