39172542 has 16 divisors (see below), whose sum is σ = 81751680. Its totient is φ = 12489752.

The previous prime is 39172531. The next prime is 39172619. The reversal of 39172542 is 24527193.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141792 + ... + 142067.

It is an arithmetic number, because the mean of its divisors is an integer number (5109480).

Almost surely, 2^39172542 is an apocalyptic number.

39172542 is an abundant number, since it is smaller than the sum of its proper divisors (42579138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39172542 is a wasteful number, since it uses less digits than its factorization.

39172542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283887.

The product of its digits is 15120, while the sum is 33.

The square root of 39172542 is about 6258.7971687857. The cubic root of 39172542 is about 339.6205166288.

The spelling of 39172542 in words is "thirty-nine million, one hundred seventy-two thousand, five hundred forty-two".