12642127 has 2 divisors, whose sum is σ = 12642128. Its totient is φ = 12642126.

The previous prime is 12642121. The next prime is 12642131. The reversal of 12642127 is 72124621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12642127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12642121) 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, 6321063 + 6321064.

It is an arithmetic number, because the mean of its divisors is an integer number (6321064).

Almost surely, 2^12642127 is an apocalyptic number.

12642127 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642127 is an equidigital number, since it uses as much as digits as its factorization.

12642127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 12642127 is about 3555.5768870888. The cubic root of 12642127 is about 232.9557223360.

Adding to 12642127 its reverse (72124621), we get a palindrome (84766748).

It can be divided in two parts, 12642 and 127, that added together give a square (12769 = 113²).

The spelling of 12642127 in words is "twelve million, six hundred forty-two thousand, one hundred twenty-seven".