1257079 has 2 divisors, whose sum is σ = 1257080. Its totient is φ = 1257078.

The previous prime is 1257077. The next prime is 1257089. The reversal of 1257079 is 9707521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1257079 - 2¹ = 1257077 is a prime.

It is a super-2 number, since 2×1257079² = 3160495224482, which contains 22 as substring.

Together with 1257077, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1257079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1257071) 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, 628539 + 628540.

It is an arithmetic number, because the mean of its divisors is an integer number (628540).

2^1257079 is an apocalyptic number.

1257079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257079 is an equidigital number, since it uses as much as digits as its factorization.

1257079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 1257079 is about 1121.1953442643. The cubic root of 1257079 is about 107.9247017433.

The spelling of 1257079 in words is "one million, two hundred fifty-seven thousand, seventy-nine".