42542736 has 20 divisors (see below), whose sum is σ = 109902192. Its totient is φ = 14180896.

The previous prime is 42542723. The next prime is 42542779. The reversal of 42542736 is 63724524.

It is a junction number, because it is equal to n+sod(n) for n = 42542697 and 42542706.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443106 + ... + 443201.

Almost surely, 2^42542736 is an apocalyptic number.

It is an amenable number.

42542736 is an abundant number, since it is smaller than the sum of its proper divisors (67359456).

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

42542736 is a wasteful number, since it uses less digits than its factorization.

42542736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886318 (or 886312 counting only the distinct ones).

The product of its digits is 40320, while the sum is 33.

The square root of 42542736 is about 6522.4792832174. The cubic root of 42542736 is about 349.0935346433.

The spelling of 42542736 in words is "forty-two million, five hundred forty-two thousand, seven hundred thirty-six".