42939991004 has 6 divisors (see below), whose sum is σ = 75144984264. Its totient is φ = 21469995500.

The previous prime is 42939990953. The next prime is 42939991007. The reversal of 42939991004 is 40019993924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42939991007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5367498872 + ... + 5367498879.

It is an arithmetic number, because the mean of its divisors is an integer number (12524164044).

Almost surely, 2^42939991004 is an apocalyptic number.

It is an amenable number.

42939991004 is a deficient number, since it is larger than the sum of its proper divisors (32204993260).

42939991004 is a wasteful number, since it uses less digits than its factorization.

42939991004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734997755 (or 10734997753 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 50.

The spelling of 42939991004 in words is "forty-two billion, nine hundred thirty-nine million, nine hundred ninety-one thousand, four".