421831232 has 28 divisors (see below), whose sum is σ = 847167216. Its totient is φ = 208371840.

The previous prime is 421831231. The next prime is 421831237. The reversal of 421831232 is 232138124.

421831232 is nontrivially palindromic in base 15.

It is not an unprimeable number, because it can be changed into a prime (421831231) 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, 34394 + ... + 45017.

It is an arithmetic number, because the mean of its divisors is an integer number (30255972).

Almost surely, 2^421831232 is an apocalyptic number.

It is an amenable number.

421831232 is an abundant number, since it is smaller than the sum of its proper divisors (425335984).

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

421831232 is an equidigital number, since it uses as much as digits as its factorization.

421831232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79506 (or 79496 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 421831232 is about 20538.5304245460. The cubic root of 421831232 is about 749.9740625104.

Adding to 421831232 its reverse (232138124), we get a palindrome (653969356).

The spelling of 421831232 in words is "four hundred twenty-one million, eight hundred thirty-one thousand, two hundred thirty-two".