42489172 has 24 divisors (see below), whose sum is σ = 83311200. Its totient is φ = 18790560.

The previous prime is 42489163. The next prime is 42489191. The reversal of 42489172 is 27198424.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 11422 + ... + 14677.

It is an arithmetic number, because the mean of its divisors is an integer number (3471300).

Almost surely, 2^42489172 is an apocalyptic number.

It is an amenable number.

42489172 is a deficient number, since it is larger than the sum of its proper divisors (40822028).

42489172 is a wasteful number, since it uses less digits than its factorization.

42489172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26151 (or 26149 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 42489172 is about 6518.3718826100. The cubic root of 42489172 is about 348.9469628191.

The spelling of 42489172 in words is "forty-two million, four hundred eighty-nine thousand, one hundred seventy-two".