232432421 has 4 divisors (see below), whose sum is σ = 250311852. Its totient is φ = 214552992.

The previous prime is 232432399. The next prime is 232432423. The reversal of 232432421 is 124234232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91891396 + 140541025 = 9586^2 + 11855^2 .

It is a cyclic number.

It is not a de Polignac number, because 232432421 - 2⁶ = 232432357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232432423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8939696 + ... + 8939721.

It is an arithmetic number, because the mean of its divisors is an integer number (62577963).

Almost surely, 2^232432421 is an apocalyptic number.

It is an amenable number.

232432421 is a deficient number, since it is larger than the sum of its proper divisors (17879431).

232432421 is a wasteful number, since it uses less digits than its factorization.

232432421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17879430.

The product of its digits is 2304, while the sum is 23.

The square root of 232432421 is about 15245.7345182185. The cubic root of 232432421 is about 614.8448909293.

Adding to 232432421 its reverse (124234232), we get a palindrome (356666653).

The spelling of 232432421 in words is "two hundred thirty-two million, four hundred thirty-two thousand, four hundred twenty-one".