656142403 has 4 divisors (see below), whose sum is σ = 749877040. Its totient is φ = 562407768.

The previous prime is 656142401. The next prime is 656142427. The reversal of 656142403 is 304241656.

656142403 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 cyclic number.

It is not a de Polignac number, because 656142403 - 2¹ = 656142401 is a prime.

It is a super-2 number, since 2×656142403² = 861045706029228818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656142401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46867308 + ... + 46867321.

It is an arithmetic number, because the mean of its divisors is an integer number (187469260).

Almost surely, 2^656142403 is an apocalyptic number.

656142403 is a deficient number, since it is larger than the sum of its proper divisors (93734637).

656142403 is an equidigital number, since it uses as much as digits as its factorization.

656142403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93734636.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 656142403 is about 25615.2767504081. The cubic root of 656142403 is about 868.9591652875.

The spelling of 656142403 in words is "six hundred fifty-six million, one hundred forty-two thousand, four hundred three".