232421021400 has 192 divisors, whose sum is σ = 770170705920. Its totient is φ = 57838105600.

The previous prime is 232421021389. The next prime is 232421021411. The reversal of 232421021400 is 4120124232.

It is an interprime number because it is at equal distance from previous prime (232421021389) and next prime (232421021411).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 360409 + ... + 771191.

It is an arithmetic number, because the mean of its divisors is an integer number (4011305760).

Almost surely, 2^232421021400 is an apocalyptic number.

232421021400 is a gapful number since it is divisible by the number (20) 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 232421021400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385085352960).

232421021400 is an abundant number, since it is smaller than the sum of its proper divisors (537749684520).

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

232421021400 is a wasteful number, since it uses less digits than its factorization.

232421021400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410866 (or 410857 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 232421021400 its reverse (4120124232), we get a palindrome (236541145632).

The spelling of 232421021400 in words is "two hundred thirty-two billion, four hundred twenty-one million, twenty-one thousand, four hundred".