12901249 has 6 divisors (see below), whose sum is σ = 13705094. Its totient is φ = 12142080.

The previous prime is 12901237. The next prime is 12901267. The reversal of 12901249 is 94210921.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6864400 + 6036849 = 2620^2 + 2457^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12901249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12901279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22032 + ... + 22609.

Almost surely, 2^12901249 is an apocalyptic number.

It is an amenable number.

12901249 is a deficient number, since it is larger than the sum of its proper divisors (803845).

12901249 is an equidigital number, since it uses as much as digits as its factorization.

12901249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44675 (or 44658 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 12901249 is about 3591.8308701831. The cubic root of 12901249 is about 234.5365788096.

The spelling of 12901249 in words is "twelve million, nine hundred one thousand, two hundred forty-nine".