42542587556 has 24 divisors (see below), whose sum is σ = 86250729600. Its totient is φ = 17982775872.

The previous prime is 42542587541. The next prime is 42542587561. The reversal of 42542587556 is 65578524524.

It is a junction number, because it is equal to n+sod(n) for n = 42542587498 and 42542587507.

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, 10404656 + ... + 10408743.

It is an arithmetic number, because the mean of its divisors is an integer number (3593780400).

Almost surely, 2^42542587556 is an apocalyptic number.

It is an amenable number.

42542587556 is an abundant number, since it is smaller than the sum of its proper divisors (43708142044).

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

42542587556 is a wasteful number, since it uses less digits than its factorization.

42542587556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20813483 (or 20813481 counting only the distinct ones).

The product of its digits is 13440000, while the sum is 53.

The spelling of 42542587556 in words is "forty-two billion, five hundred forty-two million, five hundred eighty-seven thousand, five hundred fifty-six".