56138442 has 16 divisors (see below), whose sum is σ = 112537920. Its totient is φ = 18669312.

The previous prime is 56138413. The next prime is 56138443. The reversal of 56138442 is 24483165.

56138442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (56138443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8023 + ... + 13290.

It is an arithmetic number, because the mean of its divisors is an integer number (7033620).

Almost surely, 2^56138442 is an apocalyptic number.

56138442 is an abundant number, since it is smaller than the sum of its proper divisors (56399478).

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

56138442 is a wasteful number, since it uses less digits than its factorization.

56138442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21757.

The product of its digits is 23040, while the sum is 33.

The square root of 56138442 is about 7492.5591088760. The cubic root of 56138442 is about 382.9012509382.

The spelling of 56138442 in words is "fifty-six million, one hundred thirty-eight thousand, four hundred forty-two".