1143185 has 4 divisors (see below), whose sum is σ = 1371828. Its totient is φ = 914544.

The previous prime is 1143167. The next prime is 1143193. The reversal of 1143185 is 5813411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 528529 = 784^2 + 727^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143185 - 2⁸ = 1142929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143185.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114314 + ... + 114323.

It is an arithmetic number, because the mean of its divisors is an integer number (342957).

2^1143185 is an apocalyptic number.

It is an amenable number.

1143185 is a deficient number, since it is larger than the sum of its proper divisors (228643).

1143185 is an equidigital number, since it uses as much as digits as its factorization.

1143185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228642.

The product of its digits is 480, while the sum is 23.

The square root of 1143185 is about 1069.1982977914. The cubic root of 1143185 is about 104.5615885050.

Adding to 1143185 its reverse (5813411), we get a palindrome (6956596).

The spelling of 1143185 in words is "one million, one hundred forty-three thousand, one hundred eighty-five".