421405326 has 12 divisors (see below), whose sum is σ = 913044912. Its totient is φ = 140468436.

The previous prime is 421405307. The next prime is 421405331. The reversal of 421405326 is 623504124.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421405326.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 11705686 + ... + 11705721.

It is an arithmetic number, because the mean of its divisors is an integer number (76087076).

Almost surely, 2^421405326 is an apocalyptic number.

421405326 is an abundant number, since it is smaller than the sum of its proper divisors (491639586).

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

421405326 is a wasteful number, since it uses less digits than its factorization.

421405326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23411415 (or 23411412 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 421405326 is about 20528.1593427175. The cubic root of 421405326 is about 749.7215713161.

The spelling of 421405326 in words is "four hundred twenty-one million, four hundred five thousand, three hundred twenty-six".