12442431 has 8 divisors (see below), whose sum is σ = 16625664. Its totient is φ = 8277080.

The previous prime is 12442429. The next prime is 12442513. The reversal of 12442431 is 13424421.

12442431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12442431 - 2¹ = 12442429 is a prime.

It is a super-2 number, since 2×12442431² = 309628178379522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12442398 and 12442407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442411) 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, 2751 + ... + 5696.

It is an arithmetic number, because the mean of its divisors is an integer number (2078208).

Almost surely, 2^12442431 is an apocalyptic number.

12442431 is a deficient number, since it is larger than the sum of its proper divisors (4183233).

12442431 is an equidigital number, since it uses as much as digits as its factorization.

12442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8941.

The product of its digits is 768, while the sum is 21.

The square root of 12442431 is about 3527.3830242830. The cubic root of 12442431 is about 231.7226111519.

Adding to 12442431 its reverse (13424421), we get a palindrome (25866852).

The spelling of 12442431 in words is "twelve million, four hundred forty-two thousand, four hundred thirty-one".