12442423 has 12 divisors (see below), whose sum is σ = 14542752. Its totient is φ = 10614240.

The previous prime is 12442411. The next prime is 12442427. The reversal of 12442423 is 32424421.

It is a happy number.

It is not a de Polignac number, because 12442423 - 2⁹ = 12441911 is a prime.

It is a super-2 number, since 2×12442423² = 309627780221858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12442394 and 12442403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12811 + ... + 13747.

It is an arithmetic number, because the mean of its divisors is an integer number (1211896).

Almost surely, 2^12442423 is an apocalyptic number.

12442423 is a deficient number, since it is larger than the sum of its proper divisors (2100329).

12442423 is an equidigital number, since it uses as much as digits as its factorization.

12442423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1215 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 12442423 is about 3527.3818902977. The cubic root of 12442423 is about 231.7225614890.

Adding to 12442423 its reverse (32424421), we get a palindrome (44866844).

The spelling of 12442423 in words is "twelve million, four hundred forty-two thousand, four hundred twenty-three".