12740357 has 4 divisors (see below), whose sum is σ = 14560416. Its totient is φ = 10920300.

The previous prime is 12740353. The next prime is 12740359. The reversal of 12740357 is 75304721.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75304721 = 109 ⋅690869.

It is a cyclic number.

It is not a de Polignac number, because 12740357 - 2² = 12740353 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 (12740353) 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, 910019 + ... + 910032.

It is an arithmetic number, because the mean of its divisors is an integer number (3640104).

Almost surely, 2^12740357 is an apocalyptic number.

It is an amenable number.

12740357 is a deficient number, since it is larger than the sum of its proper divisors (1820059).

12740357 is an equidigital number, since it uses as much as digits as its factorization.

12740357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820058.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 12740357 is about 3569.3636687791. The cubic root of 12740357 is about 233.5575257912.

The spelling of 12740357 in words is "twelve million, seven hundred forty thousand, three hundred fifty-seven".