1143873 has 12 divisors (see below), whose sum is σ = 1665300. Its totient is φ = 756576.

The previous prime is 1143851. The next prime is 1143887. The reversal of 1143873 is 3783411.

It can be written as a sum of positive squares in 2 ways, for example, as 97344 + 1046529 = 312^2 + 1023^2 .

It is not a de Polignac number, because 1143873 - 2⁶ = 1143809 is a prime.

Its product of digits (2016) is a multiple of the sum of its prime factors (1008).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 915 + ... + 1767.

It is an arithmetic number, because the mean of its divisors is an integer number (138775).

2^1143873 is an apocalyptic number.

It is an amenable number.

1143873 is a deficient number, since it is larger than the sum of its proper divisors (521427).

1143873 is a wasteful number, since it uses less digits than its factorization.

1143873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 1005 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1143873 is about 1069.5199857880. The cubic root of 1143873 is about 104.5825603064.

It can be divided in two parts, 11438 and 73, that added together give a palindrome (11511).

The spelling of 1143873 in words is "one million, one hundred forty-three thousand, eight hundred seventy-three".