12742855 has 4 divisors (see below), whose sum is σ = 15291432. Its totient is φ = 10194280.

The previous prime is 12742823. The next prime is 12742871. The reversal of 12742855 is 55824721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55824721 = 83 ⋅672587.

It is not a de Polignac number, because 12742855 - 2⁵ = 12742823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12742855.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274281 + ... + 1274290.

It is an arithmetic number, because the mean of its divisors is an integer number (3822858).

Almost surely, 2^12742855 is an apocalyptic number.

12742855 is a deficient number, since it is larger than the sum of its proper divisors (2548577).

12742855 is an equidigital number, since it uses as much as digits as its factorization.

12742855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548576.

The product of its digits is 22400, while the sum is 34.

The square root of 12742855 is about 3569.7135739440. The cubic root of 12742855 is about 233.5727893240.

The spelling of 12742855 in words is "twelve million, seven hundred forty-two thousand, eight hundred fifty-five".