421401232 has 40 divisors (see below), whose sum is σ = 934065216. Its totient is φ = 180414336.

The previous prime is 421401221. The next prime is 421401283. The reversal of 421401232 is 232104124.

It is a super-2 number, since 2×421401232² = 355157996662235648, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212598 + ... + 214570.

Almost surely, 2^421401232 is an apocalyptic number.

It is an amenable number.

421401232 is an abundant number, since it is smaller than the sum of its proper divisors (512663984).

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

421401232 is a wasteful number, since it uses less digits than its factorization.

421401232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895 (or 3889 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 421401232 is about 20528.0596257903. The cubic root of 421401232 is about 749.7191434318.

Adding to 421401232 its reverse (232104124), we get a palindrome (653505356).

The spelling of 421401232 in words is "four hundred twenty-one million, four hundred one thousand, two hundred thirty-two".