421062144 has 80 divisors (see below), whose sum is σ = 1126052928. Its totient is φ = 139814912.

The previous prime is 421062139. The next prime is 421062209. The reversal of 421062144 is 441260124.

It is a happy number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717019 + ... + 717605.

Almost surely, 2^421062144 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 421062144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563026464).

421062144 is an abundant number, since it is smaller than the sum of its proper divisors (704990784).

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

421062144 is an equidigital number, since it uses as much as digits as its factorization.

421062144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 421062144 is about 20519.7988294233. The cubic root of 421062144 is about 749.5179978538.

The spelling of 421062144 in words is "four hundred twenty-one million, sixty-two thousand, one hundred forty-four".