642048272 has 40 divisors (see below), whose sum is σ = 1280113752. Its totient is φ = 311731200.

The previous prime is 642048269. The next prime is 642048293. The reversal of 642048272 is 272840246.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 302899216 + 339149056 = 17404^2 + 18416^2 .

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, 485372 + ... + 486692.

Almost surely, 2^642048272 is an apocalyptic number.

It is an amenable number.

642048272 is a deficient number, since it is larger than the sum of its proper divisors (638065480).

642048272 is a wasteful number, since it uses less digits than its factorization.

642048272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 642048272 is about 25338.6714726720. The cubic root of 642048272 is about 862.6922445376.

The spelling of 642048272 in words is "six hundred forty-two million, forty-eight thousand, two hundred seventy-two".