1120897 has 4 divisors (see below), whose sum is σ = 1142100. Its totient is φ = 1099696.

The previous prime is 1120883. The next prime is 1120901. The reversal of 1120897 is 7980211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7980211 = 359 ⋅22229.

It can be written as a sum of positive squares in 2 ways, for example, as 430336 + 690561 = 656^2 + 831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120897 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 (1120807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10522 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (285525).

2^1120897 is an apocalyptic number.

It is an amenable number.

1120897 is a deficient number, since it is larger than the sum of its proper divisors (21203).

1120897 is an equidigital number, since it uses as much as digits as its factorization.

1120897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21202.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1120897 is about 1058.7242322720. The cubic root of 1120897 is about 103.8775988485.

The spelling of 1120897 in words is "one million, one hundred twenty thousand, eight hundred ninety-seven".