12433421 has 16 divisors (see below), whose sum is σ = 16695168. Its totient is φ = 8942400.

The previous prime is 12433417. The next prime is 12433423.

12433421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12433421 - 2² = 12433417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12433393 and 12433402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12433423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5210 + ... + 7211.

It is an arithmetic number, because the mean of its divisors is an integer number (1043448).

Almost surely, 2^12433421 is an apocalyptic number.

12433421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12433421 is a deficient number, since it is larger than the sum of its proper divisors (4261747).

12433421 is a wasteful number, since it uses less digits than its factorization.

12433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12452.

The product of its digits is 576, while the sum is 20.

The square root of 12433421 is about 3526.1056422064. The cubic root of 12433421 is about 231.6666648264. Note that the first 5 decimals are identical.

It can be divided in two parts, 1243 and 3421, that added together give a palindrome (4664).

The spelling of 12433421 in words is "twelve million, four hundred thirty-three thousand, four hundred twenty-one".