56747842 has 16 divisors (see below), whose sum is σ = 87334200. Its totient is φ = 27644032.

The previous prime is 56747827. The next prime is 56747843. The reversal of 56747842 is 24874765.

56747842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 39200121 + 17547721 = 6261^2 + 4189^2 .

It is not an unprimeable number, because it can be changed into a prime (56747843) 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, 13998 + ... + 17590.

Almost surely, 2^56747842 is an apocalyptic number.

56747842 is a deficient number, since it is larger than the sum of its proper divisors (30586358).

56747842 is a wasteful number, since it uses less digits than its factorization.

56747842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797.

The product of its digits is 376320, while the sum is 43.

The square root of 56747842 is about 7533.1163538074. The cubic root of 56747842 is about 384.2817710925.

The spelling of 56747842 in words is "fifty-six million, seven hundred forty-seven thousand, eight hundred forty-two".