12421323 has 16 divisors (see below), whose sum is σ = 18493440. Its totient is φ = 8239752.

The previous prime is 12421291. The next prime is 12421327. The reversal of 12421323 is 32312421.

It is not a de Polignac number, because 12421323 - 2⁵ = 12421291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12421296 and 12421305.

It is not an unprimeable number, because it can be changed into a prime (12421327) 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, 4990 + ... + 7052.

It is an arithmetic number, because the mean of its divisors is an integer number (1155840).

Almost surely, 2^12421323 is an apocalyptic number.

12421323 is a deficient number, since it is larger than the sum of its proper divisors (6072117).

12421323 is a wasteful number, since it uses less digits than its factorization.

12421323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295 (or 2289 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 12421323 is about 3524.3897344079. The cubic root of 12421323 is about 231.5915014734.

Adding to 12421323 its reverse (32312421), we get a palindrome (44733744).

The spelling of 12421323 in words is "twelve million, four hundred twenty-one thousand, three hundred twenty-three".