421339812 has 12 divisors (see below), whose sum is σ = 983126256. Its totient is φ = 140446600.

The previous prime is 421339799. The next prime is 421339813. The reversal of 421339812 is 218933124.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (421339813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17555814 + ... + 17555837.

It is an arithmetic number, because the mean of its divisors is an integer number (81927188).

Almost surely, 2^421339812 is an apocalyptic number.

It is an amenable number.

421339812 is an abundant number, since it is smaller than the sum of its proper divisors (561786444).

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

421339812 is a wasteful number, since it uses less digits than its factorization.

421339812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35111658 (or 35111656 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 421339812 is about 20526.5635701644. The cubic root of 421339812 is about 749.6827173501.

The spelling of 421339812 in words is "four hundred twenty-one million, three hundred thirty-nine thousand, eight hundred twelve".