1112391 has 12 divisors (see below), whose sum is σ = 1836432. Its totient is φ = 635616.

The previous prime is 1112389. The next prime is 1112413. The reversal of 1112391 is 1932111.

It is not a de Polignac number, because 1112391 - 2¹ = 1112389 is a prime.

1112391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112341) 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 11 ways as a sum of consecutive naturals, for example, 8766 + ... + 8891.

It is an arithmetic number, because the mean of its divisors is an integer number (153036).

2^1112391 is an apocalyptic number.

1112391 is a deficient number, since it is larger than the sum of its proper divisors (724041).

1112391 is a wasteful number, since it uses less digits than its factorization.

1112391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17670 (or 17667 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

The square root of 1112391 is about 1054.6994832653. The cubic root of 1112391 is about 103.6141707285.

The spelling of 1112391 in words is "one million, one hundred twelve thousand, three hundred ninety-one".