421430736 has 20 divisors (see below), whose sum is σ = 1088696192. Its totient is φ = 140476896.

The previous prime is 421430689. The next prime is 421430743. The reversal of 421430736 is 637034124.

It is a congruent number.

It is an unprimeable number.

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, 4389856 + ... + 4389951.

Almost surely, 2^421430736 is an apocalyptic number.

It is an amenable number.

421430736 is an abundant number, since it is smaller than the sum of its proper divisors (667265456).

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

421430736 is a wasteful number, since it uses less digits than its factorization.

421430736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8779818 (or 8779812 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 421430736 is about 20528.7782393400. The cubic root of 421430736 is about 749.7366399773.

The spelling of 421430736 in words is "four hundred twenty-one million, four hundred thirty thousand, seven hundred thirty-six".