1297187 has 8 divisors (see below), whose sum is σ = 1387200. Its totient is φ = 1209384.

The previous prime is 1297171. The next prime is 1297193. The reversal of 1297187 is 7817921.

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 1297187 - 2⁴ = 1297171 is a prime.

It is a super-2 number, since 2×1297187² = 3365388225938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1297147) 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 in 7 ways as a sum of consecutive naturals, for example, 764 + ... + 1782.

It is an arithmetic number, because the mean of its divisors is an integer number (173400).

2^1297187 is an apocalyptic number.

1297187 is a deficient number, since it is larger than the sum of its proper divisors (90013).

1297187 is a wasteful number, since it uses less digits than its factorization.

1297187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its digits is 7056, while the sum is 35.

The square root of 1297187 is about 1138.9411749515. The cubic root of 1297187 is about 109.0605112485.

The spelling of 1297187 in words is "one million, two hundred ninety-seven thousand, one hundred eighty-seven".