421930764 has 36 divisors (see below), whose sum is σ = 1068873624. Its totient is φ = 140336832.

The previous prime is 421930759. The next prime is 421930787. The reversal of 421930764 is 467039124.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4264 + ... + 29360.

It is an arithmetic number, because the mean of its divisors is an integer number (29690934).

Almost surely, 2^421930764 is an apocalyptic number.

It is an amenable number.

421930764 is an abundant number, since it is smaller than the sum of its proper divisors (646942860).

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

421930764 is a wasteful number, since it uses less digits than its factorization.

421930764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25574 (or 25569 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 421930764 is about 20540.9533371750. The cubic root of 421930764 is about 750.0330438774.

Adding to 421930764 its reverse (467039124), we get a palindrome (888969888).

The spelling of 421930764 in words is "four hundred twenty-one million, nine hundred thirty thousand, seven hundred sixty-four".