1297841 has 2 divisors, whose sum is σ = 1297842. Its totient is φ = 1297840.

The previous prime is 1297799. The next prime is 1297847. The reversal of 1297841 is 1487921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 633616 = 815^2 + 796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297841 - 2¹⁰ = 1296817 is a prime.

It is a super-2 number, since 2×1297841² = 3368782522562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1297798 and 1297807.

It is not a weakly prime, because it can be changed into another prime (1297847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648920 + 648921.

It is an arithmetic number, because the mean of its divisors is an integer number (648921).

2^1297841 is an apocalyptic number.

It is an amenable number.

1297841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297841 is an equidigital number, since it uses as much as digits as its factorization.

1297841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 1297841 is about 1139.2282475430. The cubic root of 1297841 is about 109.0788364376.

The spelling of 1297841 in words is "one million, two hundred ninety-seven thousand, eight hundred forty-one".