12757742 has 4 divisors (see below), whose sum is σ = 19136616. Its totient is φ = 6378870.

The previous prime is 12757741. The next prime is 12757751. The reversal of 12757742 is 24775721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24775721 = 47 ⋅527143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12757741) 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 as a sum of consecutive naturals, namely, 3189434 + ... + 3189437.

It is an arithmetic number, because the mean of its divisors is an integer number (4784154).

Almost surely, 2^12757742 is an apocalyptic number.

12757742 is a deficient number, since it is larger than the sum of its proper divisors (6378874).

12757742 is an equidigital number, since it uses as much as digits as its factorization.

12757742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378873.

The product of its digits is 27440, while the sum is 35.

The square root of 12757742 is about 3571.7981465923. The cubic root of 12757742 is about 233.6637120385.

The spelling of 12757742 in words is "twelve million, seven hundred fifty-seven thousand, seven hundred forty-two".