12743745 has 16 divisors (see below), whose sum is σ = 23303040. Its totient is φ = 5825664.

The previous prime is 12743741. The next prime is 12743747. The reversal of 12743745 is 54734721.

It is not a de Polignac number, because 12743745 - 2² = 12743741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12743741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60580 + ... + 60789.

It is an arithmetic number, because the mean of its divisors is an integer number (1456440).

Almost surely, 2^12743745 is an apocalyptic number.

12743745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12743745 is a deficient number, since it is larger than the sum of its proper divisors (10559295).

12743745 is a wasteful number, since it uses less digits than its factorization.

12743745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121384.

The product of its digits is 23520, while the sum is 33.

The square root of 12743745 is about 3569.8382316290. The cubic root of 12743745 is about 233.5782270103.

The spelling of 12743745 in words is "twelve million, seven hundred forty-three thousand, seven hundred forty-five".