1280297 has 2 divisors, whose sum is σ = 1280298. Its totient is φ = 1280296.

The previous prime is 1280291. The next prime is 1280309. The reversal of 1280297 is 7920821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 802816 + 477481 = 896^2 + 691^2 .

It is an emirp because it is prime and its reverse (7920821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1280297 - 2⁴ = 1280281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1280291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640148 + 640149.

It is an arithmetic number, because the mean of its divisors is an integer number (640149).

2^1280297 is an apocalyptic number.

It is an amenable number.

1280297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280297 is an equidigital number, since it uses as much as digits as its factorization.

1280297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1280297 is about 1131.5020989817. The cubic root of 1280297 is about 108.5851017439.

The spelling of 1280297 in words is "one million, two hundred eighty thousand, two hundred ninety-seven".