42542112 has 24 divisors (see below), whose sum is σ = 111673296. Its totient is φ = 14180672.

The previous prime is 42542099. The next prime is 42542113. The reversal of 42542112 is 21124524.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (42542113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221478 + ... + 221669.

It is an arithmetic number, because the mean of its divisors is an integer number (4653054).

Almost surely, 2^42542112 is an apocalyptic number.

It is an amenable number.

42542112 is an abundant number, since it is smaller than the sum of its proper divisors (69131184).

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

42542112 is a wasteful number, since it uses less digits than its factorization.

42542112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443160 (or 443152 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 42542112 is about 6522.4314484707. The cubic root of 42542112 is about 349.0918278464.

Adding to 42542112 its reverse (21124524), we get a palindrome (63666636).

The spelling of 42542112 in words is "forty-two million, five hundred forty-two thousand, one hundred twelve".