1143165 has 16 divisors (see below), whose sum is σ = 1937088. Its totient is φ = 573696.

The previous prime is 1143161. The next prime is 1143167. The reversal of 1143165 is 5613411.

It is not a de Polignac number, because 1143165 - 2² = 1143161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1987 + ... + 2496.

It is an arithmetic number, because the mean of its divisors is an integer number (121068).

2^1143165 is an apocalyptic number.

1143165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143165 is a deficient number, since it is larger than the sum of its proper divisors (793923).

1143165 is a wasteful number, since it uses less digits than its factorization.

1143165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508.

The product of its digits is 360, while the sum is 21.

The square root of 1143165 is about 1069.1889449485. The cubic root of 1143165 is about 104.5609787338.

Adding to 1143165 its reverse (5613411), we get a palindrome (6756576).

The spelling of 1143165 in words is "one million, one hundred forty-three thousand, one hundred sixty-five".