1297247 has 8 divisors (see below), whose sum is σ = 1514496. Its totient is φ = 1087992.

The previous prime is 1297243. The next prime is 1297249. The reversal of 1297247 is 7427921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1297247 - 2² = 1297243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1643 + ... + 2300.

It is an arithmetic number, because the mean of its divisors is an integer number (189312).

2^1297247 is an apocalyptic number.

1297247 is a deficient number, since it is larger than the sum of its proper divisors (217249).

1297247 is an equidigital number, since it uses as much as digits as its factorization.

1297247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997.

The product of its digits is 7056, while the sum is 32.

The square root of 1297247 is about 1138.9675149011. The cubic root of 1297247 is about 109.0621927151.

The spelling of 1297247 in words is "one million, two hundred ninety-seven thousand, two hundred forty-seven".