1165043 has 4 divisors (see below), whose sum is σ = 1270968. Its totient is φ = 1059120.

The previous prime is 1165037. The next prime is 1165049. The reversal of 1165043 is 3405611.

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

It is an interprime number because it is at equal distance from previous prime (1165037) and next prime (1165049).

It is a cyclic number.

It is not a de Polignac number, because 1165043 - 2⁶ = 1164979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52946 + ... + 52967.

It is an arithmetic number, because the mean of its divisors is an integer number (317742).

2^1165043 is an apocalyptic number.

1165043 is a deficient number, since it is larger than the sum of its proper divisors (105925).

1165043 is a wasteful number, since it uses less digits than its factorization.

1165043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105924.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1165043 is about 1079.3715764277. The cubic root of 1165043 is about 105.2238007997.

The spelling of 1165043 in words is "one million, one hundred sixty-five thousand, forty-three".