12742777 has 2 divisors, whose sum is σ = 12742778. Its totient is φ = 12742776.

The previous prime is 12742771. The next prime is 12742783. The reversal of 12742777 is 77724721.

It is a balanced prime because it is at equal distance from previous prime (12742771) and next prime (12742783).

It can be written as a sum of positive squares in only one way, i.e., 7639696 + 5103081 = 2764^2 + 2259^2 .

It is an emirp because it is prime and its reverse (77724721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12742777 - 2¹⁹ = 12218489 is a prime.

It is not a weakly prime, because it can be changed into another prime (12742771) by changing a digit.

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 as a sum of consecutive naturals, namely, 6371388 + 6371389.

It is an arithmetic number, because the mean of its divisors is an integer number (6371389).

Almost surely, 2^12742777 is an apocalyptic number.

It is an amenable number.

12742777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12742777 is an equidigital number, since it uses as much as digits as its factorization.

12742777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38416, while the sum is 37.

The square root of 12742777 is about 3569.7026486810. The cubic root of 12742777 is about 233.5723127507.

The spelling of 12742777 in words is "twelve million, seven hundred forty-two thousand, seven hundred seventy-seven".