1111143 has 12 divisors (see below), whose sum is σ = 1628984. Its totient is φ = 673200.

The previous prime is 1111091. The next prime is 1111151. The reversal of 1111143 is 3411111.

It is not a de Polignac number, because 1111143 - 2⁸ = 1110887 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 (1111183) 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, 1168 + ... + 1893.

2^1111143 is an apocalyptic number.

1111143 is a deficient number, since it is larger than the sum of its proper divisors (517841).

1111143 is a wasteful number, since it uses less digits than its factorization.

1111143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086 (or 3075 counting only the distinct ones).

The product of its digits is 12, while the sum is 12.

The square root of 1111143 is about 1054.1076795091. The cubic root of 1111143 is about 103.5754077176.

Adding to 1111143 its reverse (3411111), we get a palindrome (4522254).

Subtracting 1111143 from its reverse (3411111), we obtain a cube (2299968 = 132³).

The spelling of 1111143 in words is "one million, one hundred eleven thousand, one hundred forty-three".