421291104 has 192 divisors, whose sum is σ = 1272902400. Its totient is φ = 120932352.

The previous prime is 421291097. The next prime is 421291111. The reversal of 421291104 is 401192124.

It is an interprime number because it is at equal distance from previous prime (421291097) and next prime (421291111).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 2584527 + ... + 2584689.

It is an arithmetic number, because the mean of its divisors is an integer number (6629700).

Almost surely, 2^421291104 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 421291104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636451200).

421291104 is an abundant number, since it is smaller than the sum of its proper divisors (851611296).

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

421291104 is a wasteful number, since it uses less digits than its factorization.

421291104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 421291104 is about 20525.3770732720. The cubic root of 421291104 is about 749.6538277999.

The spelling of 421291104 in words is "four hundred twenty-one million, two hundred ninety-one thousand, one hundred four".