421312232 has 64 divisors (see below), whose sum is σ = 938520000. Its totient is φ = 175150080.

The previous prime is 421312219. The next prime is 421312249. The reversal of 421312232 is 232213124.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44144 + ... + 52832.

It is an arithmetic number, because the mean of its divisors is an integer number (14664375).

Almost surely, 2^421312232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421312232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469260000).

421312232 is an abundant number, since it is smaller than the sum of its proper divisors (517207768).

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

421312232 is a wasteful number, since it uses less digits than its factorization.

421312232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8754 (or 8750 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 421312232 is about 20525.8917467671. The cubic root of 421312232 is about 749.6663594525. Note that the first 3 decimals are identical.

Adding to 421312232 its reverse (232213124), we get a palindrome (653525356).

The spelling of 421312232 in words is "four hundred twenty-one million, three hundred twelve thousand, two hundred thirty-two".