1297243 has 2 divisors, whose sum is σ = 1297244. Its totient is φ = 1297242.

The previous prime is 1297229. The next prime is 1297249. The reversal of 1297243 is 3427921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1297243 - 2⁵ = 1297211 is a prime.

It is not a weakly prime, because it can be changed into another prime (1297249) 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, 648621 + 648622.

It is an arithmetic number, because the mean of its divisors is an integer number (648622).

2^1297243 is an apocalyptic number.

1297243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297243 is an equidigital number, since it uses as much as digits as its factorization.

1297243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 1297243 is about 1138.9657589234. The cubic root of 1297243 is about 109.0620806190.

It can be divided in two parts, 1297 and 243, that added together give a triangular number (1540 = T₅₅).

The spelling of 1297243 in words is "one million, two hundred ninety-seven thousand, two hundred forty-three".