656502442 has 4 divisors (see below), whose sum is σ = 984753666. Its totient is φ = 328251220.

The previous prime is 656502391. The next prime is 656502443. The reversal of 656502442 is 244205656.

656502442 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 can be written as a sum of positive squares in only one way, i.e., 655923321 + 579121 = 25611^2 + 761^2 .

It is a junction number, because it is equal to n+sod(n) for n = 656502398 and 656502407.

It is not an unprimeable number, because it can be changed into a prime (656502443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164125609 + ... + 164125612.

Almost surely, 2^656502442 is an apocalyptic number.

656502442 is a deficient number, since it is larger than the sum of its proper divisors (328251224).

656502442 is a wasteful number, since it uses less digits than its factorization.

656502442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328251223.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 656502442 is about 25622.3036044771. The cubic root of 656502442 is about 869.1180748884.

The spelling of 656502442 in words is "six hundred fifty-six million, five hundred two thousand, four hundred forty-two".