1112891 has 4 divisors (see below), whose sum is σ = 1198512. Its totient is φ = 1027272.

The previous prime is 1112857. The next prime is 1112897. The reversal of 1112891 is 1982111.

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 1112891 - 2⁶ = 1112827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112897) 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, 42791 + ... + 42816.

It is an arithmetic number, because the mean of its divisors is an integer number (299628).

2^1112891 is an apocalyptic number.

1112891 is a deficient number, since it is larger than the sum of its proper divisors (85621).

1112891 is an equidigital number, since it uses as much as digits as its factorization.

1112891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85620.

The product of its digits is 144, while the sum is 23.

The square root of 1112891 is about 1054.9364909794. The cubic root of 1112891 is about 103.6296926463.

The spelling of 1112891 in words is "one million, one hundred twelve thousand, eight hundred ninety-one".