12743945 has 8 divisors (see below), whose sum is σ = 15786240. Its totient is φ = 9866160.

The previous prime is 12743933. The next prime is 12743977. The reversal of 12743945 is 54934721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12743945 - 2²² = 8549641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40955 + ... + 41264.

It is an arithmetic number, because the mean of its divisors is an integer number (1973280).

Almost surely, 2^12743945 is an apocalyptic number.

It is an amenable number.

12743945 is a deficient number, since it is larger than the sum of its proper divisors (3042295).

12743945 is an equidigital number, since it uses as much as digits as its factorization.

12743945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82255.

The product of its digits is 30240, while the sum is 35.

The square root of 12743945 is about 3569.8662439929. The cubic root of 12743945 is about 233.5794489274.

The spelling of 12743945 in words is "twelve million, seven hundred forty-three thousand, nine hundred forty-five".