1272679 has 2 divisors, whose sum is σ = 1272680. Its totient is φ = 1272678.

The previous prime is 1272673. The next prime is 1272749. The reversal of 1272679 is 9762721.

It is a weak prime.

It is an emirp because it is prime and its reverse (9762721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1272679 - 2⁵ = 1272647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272673) 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, 636339 + 636340.

It is an arithmetic number, because the mean of its divisors is an integer number (636340).

2^1272679 is an apocalyptic number.

1272679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272679 is an equidigital number, since it uses as much as digits as its factorization.

1272679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 34.

The square root of 1272679 is about 1128.1307548330. The cubic root of 1272679 is about 108.3693061339.

The spelling of 1272679 in words is "one million, two hundred seventy-two thousand, six hundred seventy-nine".