12342409 has 2 divisors, whose sum is σ = 12342410. Its totient is φ = 12342408.

The previous prime is 12342389. The next prime is 12342437. The reversal of 12342409 is 90424321.

12342409 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., 9610000 + 2732409 = 3100^2 + 1653^2 .

It is a cyclic number.

It is not a de Polignac number, because 12342409 - 2¹⁷ = 12211337 is a prime.

It is equal to p₈₀₉₀₁₇ and since 12342409 and 809017 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (12342509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6171204 + 6171205.

It is an arithmetic number, because the mean of its divisors is an integer number (6171205).

Almost surely, 2^12342409 is an apocalyptic number.

It is an amenable number.

12342409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12342409 is an equidigital number, since it uses as much as digits as its factorization.

12342409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 12342409 is about 3513.1764828998. The cubic root of 12342409 is about 231.1000172823.

The spelling of 12342409 in words is "twelve million, three hundred forty-two thousand, four hundred nine".