42165624 has 32 divisors (see below), whose sum is σ = 109998720. Its totient is φ = 13443936.

The previous prime is 42165587. The next prime is 42165631. The reversal of 42165624 is 42656124.

It is a junction number, because it is equal to n+sod(n) for n = 42165591 and 42165600.

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, 37642 + ... + 38745.

It is an arithmetic number, because the mean of its divisors is an integer number (3437460).

Almost surely, 2^42165624 is an apocalyptic number.

It is an amenable number.

42165624 is an abundant number, since it is smaller than the sum of its proper divisors (67833096).

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

42165624 is a wasteful number, since it uses less digits than its factorization.

42165624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76419 (or 76415 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 42165624 is about 6493.5062947532. The cubic root of 42165624 is about 348.0589806228.

The spelling of 42165624 in words is "forty-two million, one hundred sixty-five thousand, six hundred twenty-four".