642361370 has 32 divisors (see below), whose sum is σ = 1322407296. Its totient is φ = 220075200.

The previous prime is 642361351. The next prime is 642361381. The reversal of 642361370 is 73163246.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127805 + ... + 132735.

It is an arithmetic number, because the mean of its divisors is an integer number (41325228).

Almost surely, 2^642361370 is an apocalyptic number.

642361370 is an abundant number, since it is smaller than the sum of its proper divisors (680045926).

642361370 is a wasteful number, since it uses less digits than its factorization.

642361370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6806.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 642361370 is about 25344.8489835706. The cubic root of 642361370 is about 862.8324537886.

The spelling of 642361370 in words is "six hundred forty-two million, three hundred sixty-one thousand, three hundred seventy".