42172505404 has 12 divisors (see below), whose sum is σ = 78143171904. Its totient is φ = 19845884864.

The previous prime is 42172505399. The next prime is 42172505423. The reversal of 42172505404 is 40450527124.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 42172505404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310091884 + ... + 310092019.

It is an arithmetic number, because the mean of its divisors is an integer number (6511930992).

Almost surely, 2^42172505404 is an apocalyptic number.

It is an amenable number.

42172505404 is a deficient number, since it is larger than the sum of its proper divisors (35970666500).

42172505404 is a wasteful number, since it uses less digits than its factorization.

42172505404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620183924 (or 620183922 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 34.

The spelling of 42172505404 in words is "forty-two billion, one hundred seventy-two million, five hundred five thousand, four hundred four".