12742815 has 16 divisors (see below), whose sum is σ = 20440800. Its totient is φ = 6778752.

The previous prime is 12742811. The next prime is 12742817. The reversal of 12742815 is 51824721.

12742815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12742815 - 2² = 12742811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12742811) 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, 6801 + ... + 8469.

It is an arithmetic number, because the mean of its divisors is an integer number (1277550).

Almost surely, 2^12742815 is an apocalyptic number.

12742815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12742815 is a deficient number, since it is larger than the sum of its proper divisors (7697985).

12742815 is a wasteful number, since it uses less digits than its factorization.

12742815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186.

The product of its digits is 4480, while the sum is 30.

The square root of 12742815 is about 3569.7079712492. The cubic root of 12742815 is about 233.5725449277.

The spelling of 12742815 in words is "twelve million, seven hundred forty-two thousand, eight hundred fifteen".