12915243 has 12 divisors (see below), whose sum is σ = 20351448. Its totient is φ = 7827360.

The previous prime is 12915241. The next prime is 12915263. The reversal of 12915243 is 34251921.

It is not a de Polignac number, because 12915243 - 2¹ = 12915241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12915241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65130 + ... + 65327.

It is an arithmetic number, because the mean of its divisors is an integer number (1695954).

Almost surely, 2^12915243 is an apocalyptic number.

12915243 is a deficient number, since it is larger than the sum of its proper divisors (7436205).

12915243 is a wasteful number, since it uses less digits than its factorization.

12915243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130474 (or 130471 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 12915243 is about 3593.7783738010. The cubic root of 12915243 is about 234.6213488681.

The spelling of 12915243 in words is "twelve million, nine hundred fifteen thousand, two hundred forty-three".