423420656 has 20 divisors (see below), whose sum is σ = 839457432. Its totient is φ = 206786496.

The previous prime is 423420631. The next prime is 423420691. The reversal of 423420656 is 656024324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307031 + ... + 308406.

Almost surely, 2^423420656 is an apocalyptic number.

It is an amenable number.

423420656 is a deficient number, since it is larger than the sum of its proper divisors (416036776).

423420656 is a wasteful number, since it uses less digits than its factorization.

423420656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615488 (or 615482 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 423420656 is about 20577.1877573200. The cubic root of 423420656 is about 750.9148279623.

The spelling of 423420656 in words is "four hundred twenty-three million, four hundred twenty thousand, six hundred fifty-six".