421405523202 has 48 divisors (see below), whose sum is σ = 879750024192. Its totient is φ = 134556649920.

The previous prime is 421405523183. The next prime is 421405523269. The reversal of 421405523202 is 202325504124.

421405523202 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×421405523202² (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 421405523202.

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, 312052 + ... + 969632.

It is an arithmetic number, because the mean of its divisors is an integer number (18328125504).

Almost surely, 2^421405523202 is an apocalyptic number.

421405523202 is an abundant number, since it is smaller than the sum of its proper divisors (458344500990).

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

421405523202 is a wasteful number, since it uses less digits than its factorization.

421405523202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657771 (or 657742 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The spelling of 421405523202 in words is "four hundred twenty-one billion, four hundred five million, five hundred twenty-three thousand, two hundred two".