232120433421 has 24 divisors (see below), whose sum is σ = 337941657144. Its totient is φ = 153522240000.

The previous prime is 232120433417. The next prime is 232120433509. The reversal of 232120433421 is 124334021232.

232120433421 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 204 + 33 + 421 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 249292521 + 231871140900 = 15789^2 + 481530^2 .

It is not a de Polignac number, because 232120433421 - 2² = 232120433417 is a prime.

It is a super-2 number, since 2×232120433421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232120433821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1960921 + ... + 2075921.

It is an arithmetic number, because the mean of its divisors is an integer number (14080902381).

Almost surely, 2^232120433421 is an apocalyptic number.

It is an amenable number.

232120433421 is a deficient number, since it is larger than the sum of its proper divisors (105821223723).

232120433421 is a wasteful number, since it uses less digits than its factorization.

232120433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116781 (or 116778 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 232120433421 its reverse (124334021232), we get a palindrome (356454454653).

The spelling of 232120433421 in words is "two hundred thirty-two billion, one hundred twenty million, four hundred thirty-three thousand, four hundred twenty-one".