642294692 has 48 divisors (see below), whose sum is σ = 1251264000. Its totient is φ = 286561152.

The previous prime is 642294691. The next prime is 642294701. The reversal of 642294692 is 296492246.

It is not an unprimeable number, because it can be changed into a prime (642294691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320309 + ... + 322307.

It is an arithmetic number, because the mean of its divisors is an integer number (26068000).

Almost surely, 2^642294692 is an apocalyptic number.

It is an amenable number.

642294692 is a deficient number, since it is larger than the sum of its proper divisors (608969308).

642294692 is a wasteful number, since it uses less digits than its factorization.

642294692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2218 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 642294692 is about 25343.5335342174. The cubic root of 642294692 is about 862.8025983542.

It can be divided in two parts, 64229 and 4692, that added together give a cube (68921 = 41³).

The spelling of 642294692 in words is "six hundred forty-two million, two hundred ninety-four thousand, six hundred ninety-two".