421404502136 has 32 divisors (see below), whose sum is σ = 792618372000. Its totient is φ = 210040596480.

The previous prime is 421404502133. The next prime is 421404502163. The reversal of 421404502136 is 631205404124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421404502133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3368840 + ... + 3491688.

It is an arithmetic number, because the mean of its divisors is an integer number (24769324125).

Almost surely, 2^421404502136 is an apocalyptic number.

It is an amenable number.

421404502136 is a deficient number, since it is larger than the sum of its proper divisors (371213869864).

421404502136 is a wasteful number, since it uses less digits than its factorization.

421404502136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124199 (or 124195 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The spelling of 421404502136 in words is "four hundred twenty-one billion, four hundred four million, five hundred two thousand, one hundred thirty-six".