42173956 has 12 divisors (see below), whose sum is σ = 80514000. Its totient is φ = 19169960.

The previous prime is 42173941. The next prime is 42173959. The reversal of 42173956 is 65937124.

It is not an unprimeable number, because it can be changed into a prime (42173959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479206 + ... + 479293.

It is an arithmetic number, because the mean of its divisors is an integer number (6709500).

Almost surely, 2^42173956 is an apocalyptic number.

It is an amenable number.

42173956 is a deficient number, since it is larger than the sum of its proper divisors (38340044).

42173956 is a wasteful number, since it uses less digits than its factorization.

42173956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958514 (or 958512 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 42173956 is about 6494.1478270825. The cubic root of 42173956 is about 348.0819047978.

The spelling of 42173956 in words is "forty-two million, one hundred seventy-three thousand, nine hundred fifty-six".