12015907 has 2 divisors, whose sum is σ = 12015908. Its totient is φ = 12015906.

The previous prime is 12015863. The next prime is 12015917. The reversal of 12015907 is 70951021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12015907 is a prime.

It is not a weakly prime, because it can be changed into another prime (12015917) 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 as a sum of consecutive naturals, namely, 6007953 + 6007954.

It is an arithmetic number, because the mean of its divisors is an integer number (6007954).

Almost surely, 2^12015907 is an apocalyptic number.

12015907 is a deficient number, since it is larger than the sum of its proper divisors (1).

12015907 is an equidigital number, since it uses as much as digits as its factorization.

12015907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 12015907 is about 3466.3968324472. The cubic root of 12015907 is about 229.0439647859.

Adding to 12015907 its reverse (70951021), we get a palindrome (82966928).

The spelling of 12015907 in words is "twelve million, fifteen thousand, nine hundred seven".