42544172 has 12 divisors (see below), whose sum is σ = 81220776. Its totient is φ = 19338240.

The previous prime is 42544171. The next prime is 42544199. The reversal of 42544172 is 27144524.

It is not an unprimeable number, because it can be changed into a prime (42544171) 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, 483413 + ... + 483500.

It is an arithmetic number, because the mean of its divisors is an integer number (6768398).

Almost surely, 2^42544172 is an apocalyptic number.

It is an amenable number.

42544172 is a deficient number, since it is larger than the sum of its proper divisors (38676604).

42544172 is a wasteful number, since it uses less digits than its factorization.

42544172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966928 (or 966926 counting only the distinct ones).

The product of its digits is 8960, while the sum is 29.

The square root of 42544172 is about 6522.5893631287. The cubic root of 42544172 is about 349.0974624010.

Adding to 42544172 its reverse (27144524), we get a palindrome (69688696).

The spelling of 42544172 in words is "forty-two million, five hundred forty-four thousand, one hundred seventy-two".