12442429 has 2 divisors, whose sum is σ = 12442430. Its totient is φ = 12442428.

The previous prime is 12442427. The next prime is 12442513. The reversal of 12442429 is 92424421.

12442429 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 643204 = 3435^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 12442429 - 2¹ = 12442427 is a prime.

Together with 12442427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12442397 and 12442406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another 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 as a sum of consecutive naturals, namely, 6221214 + 6221215.

It is an arithmetic number, because the mean of its divisors is an integer number (6221215).

Almost surely, 2^12442429 is an apocalyptic number.

It is an amenable number.

12442429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12442429 is an equidigital number, since it uses as much as digits as its factorization.

12442429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 28.

The square root of 12442429 is about 3527.3827407867. The cubic root of 12442429 is about 231.7225987362.

The spelling of 12442429 in words is "twelve million, four hundred forty-two thousand, four hundred twenty-nine".