1143166 has 4 divisors (see below), whose sum is σ = 1714752. Its totient is φ = 571582.

The previous prime is 1143161. The next prime is 1143167. The reversal of 1143166 is 6613411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6613411 = 7 ⋅944773.

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 as a sum of consecutive naturals, namely, 285790 + ... + 285793.

It is an arithmetic number, because the mean of its divisors is an integer number (428688).

2^1143166 is an apocalyptic number.

1143166 is a deficient number, since it is larger than the sum of its proper divisors (571586).

1143166 is an equidigital number, since it uses as much as digits as its factorization.

1143166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571585.

The product of its digits is 432, while the sum is 22.

The square root of 1143166 is about 1069.1894125925. The cubic root of 1143166 is about 104.5610092225.

Adding to 1143166 its reverse (6613411), we get a palindrome (7756577).

The spelling of 1143166 in words is "one million, one hundred forty-three thousand, one hundred sixty-six".