12945117 has 4 divisors (see below), whose sum is σ = 17260160. Its totient is φ = 8630076.

The previous prime is 12945103. The next prime is 12945133. The reversal of 12945117 is 71154921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12945117 - 2¹⁰ = 12944093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12945157) 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 3 ways as a sum of consecutive naturals, for example, 2157517 + ... + 2157522.

It is an arithmetic number, because the mean of its divisors is an integer number (4315040).

Almost surely, 2^12945117 is an apocalyptic number.

It is an amenable number.

12945117 is a deficient number, since it is larger than the sum of its proper divisors (4315043).

12945117 is an equidigital number, since it uses as much as digits as its factorization.

12945117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315042.

The product of its digits is 2520, while the sum is 30.

The square root of 12945117 is about 3597.9323228766. The cubic root of 12945117 is about 234.8021089442.

The spelling of 12945117 in words is "twelve million, nine hundred forty-five thousand, one hundred seventeen".