12780127 has 2 divisors, whose sum is σ = 12780128. Its totient is φ = 12780126.

The previous prime is 12780121. The next prime is 12780139. The reversal of 12780127 is 72108721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12780127 - 2⁷ = 12779999 is a prime.

It is a super-2 number, since 2×12780127² = 326663292272258, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12780095 and 12780104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12780121) 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, 6390063 + 6390064.

It is an arithmetic number, because the mean of its divisors is an integer number (6390064).

Almost surely, 2^12780127 is an apocalyptic number.

12780127 is a deficient number, since it is larger than the sum of its proper divisors (1).

12780127 is an equidigital number, since it uses as much as digits as its factorization.

12780127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 12780127 is about 3574.9303489719. The cubic root of 12780127 is about 233.8002959249.

Adding to 12780127 its reverse (72108721), we get a palindrome (84888848).

The spelling of 12780127 in words is "twelve million, seven hundred eighty thousand, one hundred twenty-seven".