12324421 has 6 divisors (see below), whose sum is σ = 12481670. Its totient is φ = 12169128.

The previous prime is 12324419. The next prime is 12324437. The reversal of 12324421 is 12442321.

12324421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12152196 + 172225 = 3486^2 + 415^2 .

It is not a de Polignac number, because 12324421 - 2¹ = 12324419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12324821) 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 5 ways as a sum of consecutive naturals, for example, 5995 + ... + 7783.

Almost surely, 2^12324421 is an apocalyptic number.

It is an amenable number.

12324421 is a deficient number, since it is larger than the sum of its proper divisors (157249).

12324421 is an frugal number, since it uses more digits than its factorization.

12324421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955 (or 1872 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 12324421 is about 3510.6154731044. The cubic root of 12324421 is about 230.9876932282.

Adding to 12324421 its reverse (12442321), we get a palindrome (24766742).

The spelling of 12324421 in words is "twelve million, three hundred twenty-four thousand, four hundred twenty-one".