12305243 has 2 divisors, whose sum is σ = 12305244. Its totient is φ = 12305242.

The previous prime is 12305239. The next prime is 12305261. The reversal of 12305243 is 34250321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12305243 - 2² = 12305239 is a prime.

It is not a weakly prime, because it can be changed into another prime (12305213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6152621 + 6152622.

It is an arithmetic number, because the mean of its divisors is an integer number (6152622).

Almost surely, 2^12305243 is an apocalyptic number.

12305243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12305243 is an equidigital number, since it uses as much as digits as its factorization.

12305243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 12305243 is about 3507.8829798042. The cubic root of 12305243 is about 230.8678179078.

Adding to 12305243 its reverse (34250321), we get a palindrome (46555564).

The spelling of 12305243 in words is "twelve million, three hundred five thousand, two hundred forty-three".