12897241 has 6 divisors (see below), whose sum is σ = 15002970. Its totient is φ = 11054736.

The previous prime is 12897197. The next prime is 12897251. The reversal of 12897241 is 14279821.

It can be written as a sum of positive squares in only one way, i.e., 9272025 + 3625216 = 3045^2 + 1904^2 .

It is not a de Polignac number, because 12897241 - 2⁹ = 12896729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12897197 and 12897206.

It is not an unprimeable number, because it can be changed into a prime (12897251) 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 in 5 ways as a sum of consecutive naturals, for example, 131556 + ... + 131653.

It is an arithmetic number, because the mean of its divisors is an integer number (2500495).

Almost surely, 2^12897241 is an apocalyptic number.

It is an amenable number.

12897241 is a deficient number, since it is larger than the sum of its proper divisors (2105729).

12897241 is an equidigital number, since it uses as much as digits as its factorization.

12897241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263223 (or 263216 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 12897241 is about 3591.2728941143. The cubic root of 12897241 is about 234.5122886558.

The spelling of 12897241 in words is "twelve million, eight hundred ninety-seven thousand, two hundred forty-one".