421304434020 has 72 divisors (see below), whose sum is σ = 1345217677440. Its totient is φ = 106434803520.

The previous prime is 421304433983. The next prime is 421304434043. The reversal of 421304434020 is 20434403124.

It is a happy number.

421304434020 is a `hidden beast` number, since 4 + 213 + 0 + 4 + 43 + 402 + 0 = 666.

It is a super-2 number, since 2×421304434020² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61590796 + ... + 61597635.

Almost surely, 2^421304434020 is an apocalyptic number.

It is an amenable number.

421304434020 is an abundant number, since it is smaller than the sum of its proper divisors (923913243420).

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

421304434020 is a wasteful number, since it uses less digits than its factorization.

421304434020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123188465 (or 123188460 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 421304434020 its reverse (20434403124), we get a palindrome (441738837144).

The spelling of 421304434020 in words is "four hundred twenty-one billion, three hundred four million, four hundred thirty-four thousand, twenty".