1128117 has 4 divisors (see below), whose sum is σ = 1504160. Its totient is φ = 752076.

The previous prime is 1128109. The next prime is 1128143. The reversal of 1128117 is 7118211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7118211 = 3 ⋅2372737.

It is not a de Polignac number, because 1128117 - 2³ = 1128109 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1128093 and 1128102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128107) 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, 188017 + ... + 188022.

It is an arithmetic number, because the mean of its divisors is an integer number (376040).

2^1128117 is an apocalyptic number.

It is an amenable number.

1128117 is a deficient number, since it is larger than the sum of its proper divisors (376043).

1128117 is an equidigital number, since it uses as much as digits as its factorization.

1128117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376042.

The product of its digits is 112, while the sum is 21.

The square root of 1128117 is about 1062.1285232965. The cubic root of 1128117 is about 104.1001562266.

The spelling of 1128117 in words is "one million, one hundred twenty-eight thousand, one hundred seventeen".