12342489 has 4 divisors (see below), whose sum is σ = 16456656. Its totient is φ = 8228324.

The previous prime is 12342461. The next prime is 12342509. The reversal of 12342489 is 98424321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98424321 = 3 ⋅32808107.

It is a cyclic number.

It is not a de Polignac number, because 12342489 - 2⁷ = 12342361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12342409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2057079 + ... + 2057084.

It is an arithmetic number, because the mean of its divisors is an integer number (4114164).

Almost surely, 2^12342489 is an apocalyptic number.

It is an amenable number.

12342489 is a deficient number, since it is larger than the sum of its proper divisors (4114167).

12342489 is an equidigital number, since it uses as much as digits as its factorization.

12342489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114166.

The product of its digits is 13824, while the sum is 33.

The square root of 12342489 is about 3513.1878685889. The cubic root of 12342489 is about 231.1005165895.

The spelling of 12342489 in words is "twelve million, three hundred forty-two thousand, four hundred eighty-nine".