232421 has 4 divisors (see below), whose sum is σ = 265632. Its totient is φ = 199212.

The previous prime is 232417. The next prime is 232433. The reversal of 232421 is 124232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232421 - 2² = 232417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 232396 and 232405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16595 + ... + 16608.

It is an arithmetic number, because the mean of its divisors is an integer number (66408).

2²³²⁴²¹ is an apocalyptic number.

It is an amenable number.

232421 is a deficient number, since it is larger than the sum of its proper divisors (33211).

232421 is an equidigital number, since it uses as much as digits as its factorization.

232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33210.

The product of its digits is 96, while the sum is 14.

The square root of 232421 is about 482.1006119059. The cubic root of 232421 is about 61.4834820248.

Adding to 232421 its reverse (124232), we get a palindrome (356653).

It can be divided in two parts, 2 and 32421, that added together give a palindrome (32423).

The spelling of 232421 in words is "two hundred thirty-two thousand, four hundred twenty-one".