421944620 has 12 divisors (see below), whose sum is σ = 886083744. Its totient is φ = 168777840.

The previous prime is 421944619. The next prime is 421944623. The reversal of 421944620 is 26449124.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (421944623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10548596 + ... + 10548635.

It is an arithmetic number, because the mean of its divisors is an integer number (73840312).

Almost surely, 2^421944620 is an apocalyptic number.

It is an amenable number.

421944620 is an abundant number, since it is smaller than the sum of its proper divisors (464139124).

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

421944620 is a wasteful number, since it uses less digits than its factorization.

421944620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21097240 (or 21097238 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 421944620 is about 20541.2906118384. The cubic root of 421944620 is about 750.0412540271.

The spelling of 421944620 in words is "four hundred twenty-one million, nine hundred forty-four thousand, six hundred twenty".