12900245 has 4 divisors (see below), whose sum is σ = 15480300. Its totient is φ = 10320192.

The previous prime is 12900227. The next prime is 12900289. The reversal of 12900245 is 54200921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2292196 + 10608049 = 1514^2 + 3257^2 .

It is a cyclic number.

It is not a de Polignac number, because 12900245 - 2¹⁰ = 12899221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12900245.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1290020 + ... + 1290029.

It is an arithmetic number, because the mean of its divisors is an integer number (3870075).

Almost surely, 2^12900245 is an apocalyptic number.

It is an amenable number.

12900245 is a deficient number, since it is larger than the sum of its proper divisors (2580055).

12900245 is an equidigital number, since it uses as much as digits as its factorization.

12900245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580054.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 12900245 is about 3591.6911058720. The cubic root of 12900245 is about 234.5304946227.

The spelling of 12900245 in words is "twelve million, nine hundred thousand, two hundred forty-five".