42542504 has 8 divisors (see below), whose sum is σ = 79767210. Its totient is φ = 21271248.

The previous prime is 42542503. The next prime is 42542519. The reversal of 42542504 is 40524524.

It can be written as a sum of positive squares in only one way, i.e., 40576900 + 1965604 = 6370^2 + 1402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (42542503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2658899 + ... + 2658914.

Almost surely, 2^42542504 is an apocalyptic number.

It is an amenable number.

42542504 is a deficient number, since it is larger than the sum of its proper divisors (37224706).

42542504 is a wasteful number, since it uses less digits than its factorization.

42542504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5317819 (or 5317815 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 42542504 is about 6522.4614985449. The cubic root of 42542504 is about 349.0929000669.

The spelling of 42542504 in words is "forty-two million, five hundred forty-two thousand, five hundred four".