421789909987124 has 36 divisors (see below), whose sum is σ = 863387633499300. Its totient is φ = 179768390981760.

The previous prime is 421789909987111. The next prime is 421789909987181.

421789909987124 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 94987829668900 + 326802080318224 = 9746170^2 + 18077668^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5944686449 + ... + 5944757400.

It is an arithmetic number, because the mean of its divisors is an integer number (23982989819425).

Almost surely, 2^{421789909987124} is an apocalyptic number.

It is an amenable number.

421789909987124 is an abundant number, since it is smaller than the sum of its proper divisors (441597723512176).

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

421789909987124 is a wasteful number, since it uses less digits than its factorization.

421789909987124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11889444048 (or 11889444039 counting only the distinct ones).

The product of its (nonzero) digits is 1316818944, while the sum is 80.

The spelling of 421789909987124 in words is "four hundred twenty-one trillion, seven hundred eighty-nine billion, nine hundred nine million, nine hundred eighty-seven thousand, one hundred twenty-four".