421404155632 has 20 divisors (see below), whose sum is σ = 816752474496. Its totient is φ = 210629323520.

The previous prime is 421404155567. The next prime is 421404155687. The reversal of 421404155632 is 236551404124.

It is a junction number, because it is equal to n+sod(n) for n = 421404155591 and 421404155600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4499344 + ... + 4592047.

Almost surely, 2^421404155632 is an apocalyptic number.

It is an amenable number.

421404155632 is a deficient number, since it is larger than the sum of its proper divisors (395348318864).

421404155632 is a wasteful number, since it uses less digits than its factorization.

421404155632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094296 (or 9094290 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 421404155632 its reverse (236551404124), we get a palindrome (657955559756).

The spelling of 421404155632 in words is "four hundred twenty-one billion, four hundred four million, one hundred fifty-five thousand, six hundred thirty-two".