1272079 has 2 divisors, whose sum is σ = 1272080. Its totient is φ = 1272078.

The previous prime is 1272071. The next prime is 1272091. The reversal of 1272079 is 9702721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1272079 - 2³ = 1272071 is a prime.

It is a Chen prime.

1272079 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272071) 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, 636039 + 636040.

It is an arithmetic number, because the mean of its divisors is an integer number (636040).

2^1272079 is an apocalyptic number.

1272079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272079 is an equidigital number, since it uses as much as digits as its factorization.

1272079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1272079 is about 1127.8647968618. The cubic root of 1272079 is about 108.3522733486.

The spelling of 1272079 in words is "one million, two hundred seventy-two thousand, seventy-nine".