421868124 has 72 divisors (see below), whose sum is σ = 1136313360. Its totient is φ = 131507712.

The previous prime is 421868101. The next prime is 421868129.

421868124 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421868129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97642 + ... + 101870.

It is an arithmetic number, because the mean of its divisors is an integer number (15782130).

Almost surely, 2^421868124 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 421868124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568156680).

421868124 is an abundant number, since it is smaller than the sum of its proper divisors (714445236).

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

421868124 is a wasteful number, since it uses less digits than its factorization.

421868124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419 (or 4414 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 421868124 is about 20539.4285217481. The cubic root of 421868124 is about 749.9959253112.

The spelling of 421868124 in words is "four hundred twenty-one million, eight hundred sixty-eight thousand, one hundred twenty-four".