421324243100 has 72 divisors (see below), whose sum is σ = 928452294000. Its totient is φ = 165930004480.

The previous prime is 421324243079. The next prime is 421324243111. The reversal of 421324243100 is 1342423124.

It is a super-2 number, since 2×421324243100² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421324243100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2345276 + ... + 2518524.

It is an arithmetic number, because the mean of its divisors is an integer number (12895170750).

Almost surely, 2^421324243100 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 421324243100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464226147000).

421324243100 is an abundant number, since it is smaller than the sum of its proper divisors (507128050900).

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

421324243100 is a wasteful number, since it uses less digits than its factorization.

421324243100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173639 (or 173632 counting only the distinct ones).

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

Adding to 421324243100 its reverse (1342423124), we get a palindrome (422666666224).

The spelling of 421324243100 in words is "four hundred twenty-one billion, three hundred twenty-four million, two hundred forty-three thousand, one hundred".