423420456 has 16 divisors (see below), whose sum is σ = 1058551200. Its totient is φ = 141140144.

The previous prime is 423420449. The next prime is 423420457. The reversal of 423420456 is 654024324.

It is not an unprimeable number, because it can be changed into a prime (423420457) 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 3 ways as a sum of consecutive naturals, for example, 8821236 + ... + 8821283.

It is an arithmetic number, because the mean of its divisors is an integer number (66159450).

Almost surely, 2^423420456 is an apocalyptic number.

It is an amenable number.

423420456 is an abundant number, since it is smaller than the sum of its proper divisors (635130744).

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

423420456 is a wasteful number, since it uses less digits than its factorization.

423420456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17642528 (or 17642524 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 423420456 is about 20577.1828975689. The cubic root of 423420456 is about 750.9147097324.

The spelling of 423420456 in words is "four hundred twenty-three million, four hundred twenty thousand, four hundred fifty-six".