421922236 has 12 divisors (see below), whose sum is σ = 739295928. Its totient is φ = 210694832.

The previous prime is 421922233. The next prime is 421922251. The reversal of 421922236 is 632229124.

It is a junction number, because it is equal to n+sod(n) for n = 421922198 and 421922207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421922231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62986 + ... + 69361.

It is an arithmetic number, because the mean of its divisors is an integer number (61607994).

Almost surely, 2^421922236 is an apocalyptic number.

It is an amenable number.

421922236 is a deficient number, since it is larger than the sum of its proper divisors (317373692).

421922236 is a wasteful number, since it uses less digits than its factorization.

421922236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133148 (or 133146 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 421922236 is about 20540.7457508241. The cubic root of 421922236 is about 750.0279906591.

The spelling of 421922236 in words is "four hundred twenty-one million, nine hundred twenty-two thousand, two hundred thirty-six".