423420426 has 64 divisors (see below), whose sum is σ = 1105453440. Its totient is φ = 118437120.

The previous prime is 423420421. The next prime is 423420443. The reversal of 423420426 is 624024324.

423420426 is a `hidden beast` number, since 4 + 234 + 2 + 0 + 426 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 423420426.

It is not an unprimeable number, because it can be changed into a prime (423420421) 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 31 ways as a sum of consecutive naturals, for example, 19695 + ... + 35138.

It is an arithmetic number, because the mean of its divisors is an integer number (17272710).

Almost surely, 2^423420426 is an apocalyptic number.

423420426 is an abundant number, since it is smaller than the sum of its proper divisors (682033014).

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

423420426 is a wasteful number, since it uses less digits than its factorization.

423420426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54868 (or 54862 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 423420426 is about 20577.1821686061. The cubic root of 423420426 is about 750.9146919979.

The spelling of 423420426 in words is "four hundred twenty-three million, four hundred twenty thousand, four hundred twenty-six".