421292920 has 32 divisors (see below), whose sum is σ = 948503520. Its totient is φ = 168411520.

The previous prime is 421292891. The next prime is 421292933. The reversal of 421292920 is 29292124.

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, 105765 + ... + 109675.

It is an arithmetic number, because the mean of its divisors is an integer number (29640735).

Almost surely, 2^421292920 is an apocalyptic number.

421292920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421292920 is an abundant number, since it is smaller than the sum of its proper divisors (527210600).

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

421292920 is a wasteful number, since it uses less digits than its factorization.

421292920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615 (or 6611 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 421292920 is about 20525.4213111449. The cubic root of 421292920 is about 749.6549049406.

The spelling of 421292920 in words is "four hundred twenty-one million, two hundred ninety-two thousand, nine hundred twenty".