1081143 has 18 divisors (see below), whose sum is σ = 1798472. Its totient is φ = 613080.

The previous prime is 1081139. The next prime is 1081153. The reversal of 1081143 is 3411801.

It is not a de Polignac number, because 1081143 - 2² = 1081139 is a prime.

It is a Duffinian number.

1081143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081123) 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 17 ways as a sum of consecutive naturals, for example, 8188 + ... + 8318.

2^1081143 is an apocalyptic number.

1081143 is a deficient number, since it is larger than the sum of its proper divisors (717329).

1081143 is an equidigital number, since it uses as much as digits as its factorization.

1081143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1081143 is about 1039.7802652484. The cubic root of 1081143 is about 102.6347385304.

Adding to 1081143 its reverse (3411801), we get a palindrome (4492944).

The spelling of 1081143 in words is "one million, eighty-one thousand, one hundred forty-three".