421875788 has 12 divisors (see below), whose sum is σ = 745593072. Its totient is φ = 208849200.

The previous prime is 421875787. The next prime is 421875841. The reversal of 421875788 is 887578124.

It is not an unprimeable number, because it can be changed into a prime (421875787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521720 + ... + 522527.

It is an arithmetic number, because the mean of its divisors is an integer number (62132756).

Almost surely, 2^421875788 is an apocalyptic number.

It is an amenable number.

421875788 is a deficient number, since it is larger than the sum of its proper divisors (323717284).

421875788 is a wasteful number, since it uses less digits than its factorization.

421875788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044352 (or 1044350 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 50.

The square root of 421875788 is about 20539.6150888959. The cubic root of 421875788 is about 750.0004669627. Note that the first 3 decimals are identical.

The spelling of 421875788 in words is "four hundred twenty-one million, eight hundred seventy-five thousand, seven hundred eighty-eight".