12442321 has 8 divisors (see below), whose sum is σ = 13154400. Its totient is φ = 11736000.

The previous prime is 12442319. The next prime is 12442327. The reversal of 12442321 is 12324421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12442321 - 2¹ = 12442319 is a prime.

It is a super-2 number, since 2×12442321² = 309622703734082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12442327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3465 + ... + 6073.

It is an arithmetic number, because the mean of its divisors is an integer number (1644300).

Almost surely, 2^12442321 is an apocalyptic number.

It is an amenable number.

12442321 is a deficient number, since it is larger than the sum of its proper divisors (712079).

12442321 is a wasteful number, since it uses less digits than its factorization.

12442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879.

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

The square root of 12442321 is about 3527.3674319526. The cubic root of 12442321 is about 231.7219282853.

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

The spelling of 12442321 in words is "twelve million, four hundred forty-two thousand, three hundred twenty-one".