421505076 has 24 divisors (see below), whose sum is σ = 991023264. Its totient is φ = 139428640.

The previous prime is 421505069. The next prime is 421505081. The reversal of 421505076 is 670505124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132495 + ... + 135638.

It is an arithmetic number, because the mean of its divisors is an integer number (41292636).

Almost surely, 2^421505076 is an apocalyptic number.

It is an amenable number.

421505076 is an abundant number, since it is smaller than the sum of its proper divisors (569518188).

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

421505076 is a wasteful number, since it uses less digits than its factorization.

421505076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268271 (or 268269 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 421505076 is about 20530.5887884396. The cubic root of 421505076 is about 749.7807216734.

The spelling of 421505076 in words is "four hundred twenty-one million, five hundred five thousand, seventy-six".