421143320024 has 256 divisors, whose sum is σ = 1025405568000. Its totient is φ = 157830266880.

The previous prime is 421143320011. The next prime is 421143320027. The reversal of 421143320024 is 420023341124.

It is a junction number, because it is equal to n+sod(n) for n = 421143319975 and 421143320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421143320027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 210886994 + ... + 210888990.

It is an arithmetic number, because the mean of its divisors is an integer number (4005490500).

Almost surely, 2^421143320024 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 421143320024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512702784000).

421143320024 is an abundant number, since it is smaller than the sum of its proper divisors (604262247976).

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

421143320024 is a wasteful number, since it uses less digits than its factorization.

421143320024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 421143320024 its reverse (420023341124), we get a palindrome (841166661148).

The spelling of 421143320024 in words is "four hundred twenty-one billion, one hundred forty-three million, three hundred twenty thousand, twenty-four".