642202370 has 32 divisors (see below), whose sum is σ = 1242252288. Its totient is φ = 238157568.

The previous prime is 642202357. The next prime is 642202399. The reversal of 642202370 is 73202246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16802 + ... + 39581.

It is an arithmetic number, because the mean of its divisors is an integer number (38820384).

Almost surely, 2^642202370 is an apocalyptic number.

642202370 is a deficient number, since it is larger than the sum of its proper divisors (600049918).

642202370 is a wasteful number, since it uses less digits than its factorization.

642202370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56474.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 642202370 is about 25341.7120573966. The cubic root of 642202370 is about 862.7612572693.

The spelling of 642202370 in words is "six hundred forty-two million, two hundred two thousand, three hundred seventy".