42524013 has 24 divisors (see below), whose sum is σ = 66205728. Its totient is φ = 24207456.

The previous prime is 42524003. The next prime is 42524017. The reversal of 42524013 is 31042524.

It is not a de Polignac number, because 42524013 - 2⁴ = 42523997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42524017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64795 + ... + 65447.

It is an arithmetic number, because the mean of its divisors is an integer number (2758572).

Almost surely, 2^42524013 is an apocalyptic number.

It is an amenable number.

42524013 is a deficient number, since it is larger than the sum of its proper divisors (23681715).

42524013 is a wasteful number, since it uses less digits than its factorization.

42524013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42524013 is about 6521.0438581565. The cubic root of 42524013 is about 349.0423152661.

Adding to 42524013 its reverse (31042524), we get a palindrome (73566537).

The spelling of 42524013 in words is "forty-two million, five hundred twenty-four thousand, thirteen".