656342442 has 48 divisors (see below), whose sum is σ = 1681280640. Its totient is φ = 181058976.

The previous prime is 656342437. The next prime is 656342461. The reversal of 656342442 is 244243656.

It is a junction number, because it is equal to n+sod(n) for n = 656342397 and 656342406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86158 + ... + 93465.

It is an arithmetic number, because the mean of its divisors is an integer number (35026680).

Almost surely, 2^656342442 is an apocalyptic number.

656342442 is an abundant number, since it is smaller than the sum of its proper divisors (1024938198).

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

656342442 is a wasteful number, since it uses less digits than its factorization.

656342442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179667 (or 179664 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 656342442 is about 25619.1811344547. The cubic root of 656342442 is about 869.0474632239.

The spelling of 656342442 in words is "six hundred fifty-six million, three hundred forty-two thousand, four hundred forty-two".