12015943 has 2 divisors, whose sum is σ = 12015944. Its totient is φ = 12015942.

The previous prime is 12015937. The next prime is 12015953. The reversal of 12015943 is 34951021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12015943 - 2⁹ = 12015431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12015953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6007971 + 6007972.

It is an arithmetic number, because the mean of its divisors is an integer number (6007972).

Almost surely, 2^12015943 is an apocalyptic number.

12015943 is a deficient number, since it is larger than the sum of its proper divisors (1).

12015943 is an equidigital number, since it uses as much as digits as its factorization.

12015943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12015943 is about 3466.4020251552. The cubic root of 12015943 is about 229.0441935264.

Adding to 12015943 its reverse (34951021), we get a palindrome (46966964).

The spelling of 12015943 in words is "twelve million, fifteen thousand, nine hundred forty-three".