1297207 has 4 divisors (see below), whose sum is σ = 1312920. Its totient is φ = 1281496.

The previous prime is 1297201. The next prime is 1297211. The reversal of 1297207 is 7027921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1297207 - 2¹¹ = 1295159 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 (1297201) 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 in 3 ways as a sum of consecutive naturals, for example, 7732 + ... + 7897.

It is an arithmetic number, because the mean of its divisors is an integer number (328230).

2^1297207 is an apocalyptic number.

1297207 is a deficient number, since it is larger than the sum of its proper divisors (15713).

1297207 is an equidigital number, since it uses as much as digits as its factorization.

1297207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1297207 is about 1138.9499550024. The cubic root of 1297207 is about 109.0610717432.

The spelling of 1297207 in words is "one million, two hundred ninety-seven thousand, two hundred seven".