1297915 has 4 divisors (see below), whose sum is σ = 1557504. Its totient is φ = 1038328.

The previous prime is 1297873. The next prime is 1297927. The reversal of 1297915 is 5197921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5197921 = 397 ⋅13093.

It is a cyclic number.

It is not a de Polignac number, because 1297915 - 2⁹ = 1297403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129787 + ... + 129796.

It is an arithmetic number, because the mean of its divisors is an integer number (389376).

2^1297915 is an apocalyptic number.

1297915 is a deficient number, since it is larger than the sum of its proper divisors (259589).

1297915 is an equidigital number, since it uses as much as digits as its factorization.

1297915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259588.

The product of its digits is 5670, while the sum is 34.

The square root of 1297915 is about 1139.2607252074. The cubic root of 1297915 is about 109.0809095422.

The spelling of 1297915 in words is "one million, two hundred ninety-seven thousand, nine hundred fifteen".