421424164452 has 48 divisors (see below), whose sum is σ = 1020362821632. Its totient is φ = 135275350560.

The previous prime is 421424164391. The next prime is 421424164463. The reversal of 421424164452 is 254461424124.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 421424164452.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5714868 + ... + 5788139.

It is an arithmetic number, because the mean of its divisors is an integer number (21257558784).

Almost surely, 2^421424164452 is an apocalyptic number.

It is an amenable number.

421424164452 is an abundant number, since it is smaller than the sum of its proper divisors (598938657180).

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

421424164452 is a wasteful number, since it uses less digits than its factorization.

421424164452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11503128 (or 11503126 counting only the distinct ones).

The product of its digits is 245760, while the sum is 39.

Adding to 421424164452 its reverse (254461424124), we get a palindrome (675885588576).

The spelling of 421424164452 in words is "four hundred twenty-one billion, four hundred twenty-four million, one hundred sixty-four thousand, four hundred fifty-two".