421644446124 has 144 divisors (see below), whose sum is σ = 1100862067200. Its totient is φ = 125476940160.

The previous prime is 421644446123. The next prime is 421644446137.

421644446124 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (421644446123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113679582 + ... + 113683290.

Almost surely, 2^421644446124 is an apocalyptic number.

421644446124 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421644446124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550431033600).

421644446124 is an abundant number, since it is smaller than the sum of its proper divisors (679217621076).

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

421644446124 is a wasteful number, since it uses less digits than its factorization.

421644446124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124 (or 5111 counting only the distinct ones).

The product of its digits is 589824, while the sum is 42.

It can be divided in two parts, 421644 and 446124, that added together give a palindrome (867768).

The spelling of 421644446124 in words is "four hundred twenty-one billion, six hundred forty-four million, four hundred forty-six thousand, one hundred twenty-four".