12432247 has 2 divisors, whose sum is σ = 12432248. Its totient is φ = 12432246.

The previous prime is 12432241. The next prime is 12432257. The reversal of 12432247 is 74223421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12432247 is a prime.

It is a zygodrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12432241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6216123 + 6216124.

It is an arithmetic number, because the mean of its divisors is an integer number (6216124).

Almost surely, 2^12432247 is an apocalyptic number.

12432247 is a deficient number, since it is larger than the sum of its proper divisors (1).

12432247 is an equidigital number, since it uses as much as digits as its factorization.

12432247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 25.

The square root of 12432247 is about 3525.9391656692. The cubic root of 12432247 is about 231.6593730487.

Adding to 12432247 its reverse (74223421), we get a palindrome (86655668).

The spelling of 12432247 in words is "twelve million, four hundred thirty-two thousand, two hundred forty-seven".