1297271 has 2 divisors, whose sum is σ = 1297272. Its totient is φ = 1297270.

The previous prime is 1297249. The next prime is 1297273. The reversal of 1297271 is 1727921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1297271 - 2¹⁴ = 1280887 is a prime.

Together with 1297273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648635 + 648636.

It is an arithmetic number, because the mean of its divisors is an integer number (648636).

2^1297271 is an apocalyptic number.

1297271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297271 is an equidigital number, since it uses as much as digits as its factorization.

1297271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 29.

The square root of 1297271 is about 1138.9780507104. The cubic root of 1297271 is about 109.0628652872.

The spelling of 1297271 in words is "one million, two hundred ninety-seven thousand, two hundred seventy-one".