642274632422 has 32 divisors (see below), whose sum is σ = 1002036160800. Its totient is φ = 308385504000.

The previous prime is 642274632397. The next prime is 642274632431. The reversal of 642274632422 is 224236472246.

It is a congruent number.

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, 12871922 + ... + 12921722.

It is an arithmetic number, because the mean of its divisors is an integer number (31313630025).

Almost surely, 2^642274632422 is an apocalyptic number.

642274632422 is a deficient number, since it is larger than the sum of its proper divisors (359761528378).

642274632422 is a wasteful number, since it uses less digits than its factorization.

642274632422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51032.

The product of its digits is 1548288, while the sum is 44.

The spelling of 642274632422 in words is "six hundred forty-two billion, two hundred seventy-four million, six hundred thirty-two thousand, four hundred twenty-two".