421569876 has 96 divisors (see below), whose sum is σ = 1281934080. Its totient is φ = 104638464.

The previous prime is 421569851. The next prime is 421569917. The reversal of 421569876 is 678965124.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7210 + ... + 29918.

It is an arithmetic number, because the mean of its divisors is an integer number (13353480).

Almost surely, 2^421569876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421569876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640967040).

421569876 is an abundant number, since it is smaller than the sum of its proper divisors (860364204).

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

421569876 is a wasteful number, since it uses less digits than its factorization.

421569876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22753 (or 22751 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 421569876 is about 20532.1668608065. The cubic root of 421569876 is about 749.8191421685.

The spelling of 421569876 in words is "four hundred twenty-one million, five hundred sixty-nine thousand, eight hundred seventy-six".