12740743 has 4 divisors (see below), whose sum is σ = 12757720. Its totient is φ = 12723768.

The previous prime is 12740719. The next prime is 12740747. The reversal of 12740743 is 34704721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34704721 = 229 ⋅151549.

It is a cyclic number.

It is not a de Polignac number, because 12740743 - 2⁵ = 12740711 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 (12740747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7308 + ... + 8881.

It is an arithmetic number, because the mean of its divisors is an integer number (3189430).

Almost surely, 2^12740743 is an apocalyptic number.

12740743 is a deficient number, since it is larger than the sum of its proper divisors (16977).

12740743 is an equidigital number, since it uses as much as digits as its factorization.

12740743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16976.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 12740743 is about 3569.4177396321. The cubic root of 12740743 is about 233.5598844978.

The spelling of 12740743 in words is "twelve million, seven hundred forty thousand, seven hundred forty-three".