12442427 has 2 divisors, whose sum is σ = 12442428. Its totient is φ = 12442426.

The previous prime is 12442411. The next prime is 12442429. The reversal of 12442427 is 72424421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12442427 - 2⁴ = 12442411 is a prime.

Together with 12442429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12442396 and 12442405.

It is not a weakly prime, because it can be changed into another prime (12442429) 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 as a sum of consecutive naturals, namely, 6221213 + 6221214.

It is an arithmetic number, because the mean of its divisors is an integer number (6221214).

Almost surely, 2^12442427 is an apocalyptic number.

12442427 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442427 is an equidigital number, since it uses as much as digits as its factorization.

12442427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 26.

The square root of 12442427 is about 3527.3824572904. The cubic root of 12442427 is about 231.7225863205.

Adding to 12442427 its reverse (72424421), we get a palindrome (84866848).

The spelling of 12442427 in words is "twelve million, four hundred forty-two thousand, four hundred twenty-seven".