421405215200 has 72 divisors (see below), whose sum is σ = 1031703888600. Its totient is φ = 168078988800.

The previous prime is 421405215181. The next prime is 421405215211. The reversal of 421405215200 is 2512504124.

It is a super-2 number, since 2×421405215200² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421405215200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475466 + ... + 1033865.

It is an arithmetic number, because the mean of its divisors is an integer number (14329220675).

Almost surely, 2^421405215200 is an apocalyptic number.

421405215200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421405215200 is an abundant number, since it is smaller than the sum of its proper divisors (610298673400).

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

421405215200 is a wasteful number, since it uses less digits than its factorization.

421405215200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509700 (or 1509687 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 421405215200 its reverse (2512504124), we get a palindrome (423917719324).

The spelling of 421405215200 in words is "four hundred twenty-one billion, four hundred five million, two hundred fifteen thousand, two hundred".