421335865152 has 126 divisors (see below), whose sum is σ = 1282902711558. Its totient is φ = 132183748608.

The previous prime is 421335865147. The next prime is 421335865163. The reversal of 421335865152 is 251568533124.

It is a happy number.

421335865152 is a `hidden beast` number, since 4 + 2 + 13 + 3 + 586 + 5 + 1 + 52 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 226134487296 + 195201377856 = 475536^2 + 441816^2 .

It is a super-2 number, since 2×421335865152² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421335865098 and 421335865107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1099083 + ... + 1432010.

Almost surely, 2^421335865152 is an apocalyptic number.

It is an amenable number.

421335865152 is an abundant number, since it is smaller than the sum of its proper divisors (861566846406).

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

421335865152 is a wasteful number, since it uses less digits than its factorization.

421335865152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531145 (or 2531115 counting only the distinct ones).

The product of its digits is 864000, while the sum is 45.

The spelling of 421335865152 in words is "four hundred twenty-one billion, three hundred thirty-five million, eight hundred sixty-five thousand, one hundred fifty-two".