42542188 has 24 divisors (see below), whose sum is σ = 82943280. Its totient is φ = 18957120.

The previous prime is 42542167. The next prime is 42542209. The reversal of 42542188 is 88124524.

It is an interprime number because it is at equal distance from previous prime (42542167) and next prime (42542209).

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, 12598 + ... + 15613.

It is an arithmetic number, because the mean of its divisors is an integer number (3455970).

Almost surely, 2^42542188 is an apocalyptic number.

It is an amenable number.

42542188 is a deficient number, since it is larger than the sum of its proper divisors (40401092).

42542188 is a wasteful number, since it uses less digits than its factorization.

42542188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28257 (or 28255 counting only the distinct ones).

The product of its digits is 20480, while the sum is 34.

The square root of 42542188 is about 6522.4372745163. The cubic root of 42542188 is about 349.0920357264.

The spelling of 42542188 in words is "forty-two million, five hundred forty-two thousand, one hundred eighty-eight".