421305085922 has 54 divisors (see below), whose sum is σ = 741364371873. Its totient is φ = 179041971024.

The previous prime is 421305085837. The next prime is 421305085951. The reversal of 421305085922 is 229580503124.

It can be written as a sum of positive squares in 2 ways, for example, as 331431641401 + 89873444521 = 575701^2 + 299789^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=458969.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421305085922.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1111622729 + ... + 1111623107.

Almost surely, 2^421305085922 is an apocalyptic number.

421305085922 is a deficient number, since it is larger than the sum of its proper divisors (320059285951).

421305085922 is an frugal number, since it uses more digits than its factorization.

421305085922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 421305085922 in words is "four hundred twenty-one billion, three hundred five million, eighty-five thousand, nine hundred twenty-two".