421643346124 has 144 divisors (see below), whose sum is σ = 1052422721280. Its totient is φ = 142719575040.

The previous prime is 421643346071. The next prime is 421643346127.

421643346124 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×421643346124² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421643346127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 974967 + ... + 1339345.

It is an arithmetic number, because the mean of its divisors is an integer number (7308491120).

Almost surely, 2^421643346124 is an apocalyptic number.

421643346124 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 421643346124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526211360640).

421643346124 is an abundant number, since it is smaller than the sum of its proper divisors (630779375156).

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

421643346124 is a wasteful number, since it uses less digits than its factorization.

421643346124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364448 (or 364429 counting only the distinct ones).

The product of its digits is 331776, while the sum is 40.

It can be divided in two parts, 421643 and 346124, that added together give a palindrome (767767).

The spelling of 421643346124 in words is "four hundred twenty-one billion, six hundred forty-three million, three hundred forty-six thousand, one hundred twenty-four".