15042172 has 12 divisors (see below), whose sum is σ = 26356960. Its totient is φ = 7511616.

The previous prime is 15042169. The next prime is 15042187. The reversal of 15042172 is 27124051.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173 + ... + 5899.

Almost surely, 2^15042172 is an apocalyptic number.

It is an amenable number.

15042172 is a deficient number, since it is larger than the sum of its proper divisors (11314788).

15042172 is a wasteful number, since it uses less digits than its factorization.

15042172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740 (or 4738 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 15042172 is about 3878.4239066920. The cubic root of 15042172 is about 246.8521136077.

The spelling of 15042172 in words is "fifteen million, forty-two thousand, one hundred seventy-two".