42542168 has 16 divisors (see below), whose sum is σ = 82340160. Its totient is φ = 20584800.

The previous prime is 42542167. The next prime is 42542209. The reversal of 42542168 is 86124524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42542161) 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, 85523 + ... + 86018.

It is an arithmetic number, because the mean of its divisors is an integer number (5146260).

Almost surely, 2^42542168 is an apocalyptic number.

It is an amenable number.

42542168 is a deficient number, since it is larger than the sum of its proper divisors (39797992).

42542168 is a wasteful number, since it uses less digits than its factorization.

42542168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171578 (or 171574 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 42542168 is about 6522.4357413469. The cubic root of 42542168 is about 349.0919810211.

The spelling of 42542168 in words is "forty-two million, five hundred forty-two thousand, one hundred sixty-eight".