12342399 has 4 divisors (see below), whose sum is σ = 16456536. Its totient is φ = 8228264.

The previous prime is 12342389. The next prime is 12342409. The reversal of 12342399 is 99324321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99324321 = 3 ⋅33108107.

It is an interprime number because it is at equal distance from previous prime (12342389) and next prime (12342409).

It is a cyclic number.

It is not a de Polignac number, because 12342399 - 2⁴ = 12342383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12342359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2057064 + ... + 2057069.

It is an arithmetic number, because the mean of its divisors is an integer number (4114134).

Almost surely, 2^12342399 is an apocalyptic number.

12342399 is a deficient number, since it is larger than the sum of its proper divisors (4114137).

12342399 is an equidigital number, since it uses as much as digits as its factorization.

12342399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114136.

The product of its digits is 11664, while the sum is 33.

The square root of 12342399 is about 3513.1750596860. The cubic root of 12342399 is about 231.0999548688.

The spelling of 12342399 in words is "twelve million, three hundred forty-two thousand, three hundred ninety-nine".