1297249 has 2 divisors, whose sum is σ = 1297250. Its totient is φ = 1297248.

The previous prime is 1297243. The next prime is 1297271. The reversal of 1297249 is 9427921.

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., 1254400 + 42849 = 1120^2 + 207^2 .

It is an emirp because it is prime and its reverse (9427921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1297249 - 2⁵ = 1297217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1297243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648624 + 648625.

It is an arithmetic number, because the mean of its divisors is an integer number (648625).

2^1297249 is an apocalyptic number.

It is an amenable number.

1297249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297249 is an equidigital number, since it uses as much as digits as its factorization.

1297249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 1297249 is about 1138.9683928889. The cubic root of 1297249 is about 109.0622487631.

It can be divided in two parts, 12972 and 49, that multiplied together give a triangular number (635628 = T₁₁₂₇).

The spelling of 1297249 in words is "one million, two hundred ninety-seven thousand, two hundred forty-nine".