12442239 has 12 divisors (see below), whose sum is σ = 18018000. Its totient is φ = 8273664.

The previous prime is 12442237. The next prime is 12442259. The reversal of 12442239 is 93224421.

12442239 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12442239 - 2¹ = 12442237 is a prime.

It is a super-2 number, since 2×12442239² = 309618622666242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12442237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2502 + ... + 5580.

It is an arithmetic number, because the mean of its divisors is an integer number (1501500).

Almost surely, 2^12442239 is an apocalyptic number.

12442239 is a deficient number, since it is larger than the sum of its proper divisors (5575761).

12442239 is a wasteful number, since it uses less digits than its factorization.

12442239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534 (or 3531 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 12442239 is about 3527.3558085342. The cubic root of 12442239 is about 231.7214192366.

The spelling of 12442239 in words is "twelve million, four hundred forty-two thousand, two hundred thirty-nine".