42544624 has 20 divisors (see below), whose sum is σ = 85273560. Its totient is φ = 20538560.

The previous prime is 42544603. The next prime is 42544627. The reversal of 42544624 is 42644524.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42544627) 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, 45382 + ... + 46309.

It is an arithmetic number, because the mean of its divisors is an integer number (4263678).

Almost surely, 2^42544624 is an apocalyptic number.

It is an amenable number.

42544624 is an abundant number, since it is smaller than the sum of its proper divisors (42728936).

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

42544624 is a wasteful number, since it uses less digits than its factorization.

42544624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91728 (or 91722 counting only the distinct ones).

The product of its digits is 30720, while the sum is 31.

The square root of 42544624 is about 6522.6240118529. The cubic root of 42544624 is about 349.0986986964.

The spelling of 42544624 in words is "forty-two million, five hundred forty-four thousand, six hundred twenty-four".