421056878592 has 96 divisors (see below), whose sum is σ = 1282907808000. Its totient is φ = 120301953024.

The previous prime is 421056878591. The next prime is 421056878597. The reversal of 421056878592 is 295878650124.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421056878591) 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 7 ways as a sum of consecutive naturals, for example, 4852092 + ... + 4938107.

It is an arithmetic number, because the mean of its divisors is an integer number (13363623000).

Almost surely, 2^421056878592 is an apocalyptic number.

421056878592 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

421056878592 is an abundant number, since it is smaller than the sum of its proper divisors (861850929408).

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

421056878592 is an equidigital number, since it uses as much as digits as its factorization.

421056878592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9790231 (or 9790211 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 421056878592 in words is "four hundred twenty-one billion, fifty-six million, eight hundred seventy-eight thousand, five hundred ninety-two".