1297121 has 4 divisors (see below), whose sum is σ = 1482432. Its totient is φ = 1111812.

The previous prime is 1297103. The next prime is 1297123. The reversal of 1297121 is 1217921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1297121 - 2⁶ = 1297057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1297123) 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 3 ways as a sum of consecutive naturals, for example, 92645 + ... + 92658.

It is an arithmetic number, because the mean of its divisors is an integer number (370608).

2^1297121 is an apocalyptic number.

It is an amenable number.

1297121 is a deficient number, since it is larger than the sum of its proper divisors (185311).

1297121 is an equidigital number, since it uses as much as digits as its factorization.

1297121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185310.

The product of its digits is 252, while the sum is 23.

The square root of 1297121 is about 1138.9122003034. The cubic root of 1297121 is about 109.0586615754.

The spelling of 1297121 in words is "one million, two hundred ninety-seven thousand, one hundred twenty-one".