56042638 has 4 divisors (see below), whose sum is σ = 84063960. Its totient is φ = 28021318.

The previous prime is 56042629. The next prime is 56042639. The reversal of 56042638 is 83624065.

It is a happy number.

56042638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56042639) 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 as a sum of consecutive naturals, namely, 14010658 + ... + 14010661.

It is an arithmetic number, because the mean of its divisors is an integer number (21015990).

Almost surely, 2^56042638 is an apocalyptic number.

56042638 is a deficient number, since it is larger than the sum of its proper divisors (28021322).

56042638 is a wasteful number, since it uses less digits than its factorization.

56042638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28021321.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 56042638 is about 7486.1631026848. The cubic root of 56042638 is about 382.6833113972.

The spelling of 56042638 in words is "fifty-six million, forty-two thousand, six hundred thirty-eight".