1161043 has 16 divisors (see below), whose sum is σ = 1340416. Its totient is φ = 997920.

The previous prime is 1161037. The next prime is 1161047. The reversal of 1161043 is 3401611.

It is a cyclic number.

It is not a de Polignac number, because 1161043 - 2⁵ = 1161011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161047) 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, 17296 + ... + 17362.

It is an arithmetic number, because the mean of its divisors is an integer number (83776).

2^1161043 is an apocalyptic number.

1161043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1161043 is a deficient number, since it is larger than the sum of its proper divisors (179373).

1161043 is a wasteful number, since it uses less digits than its factorization.

1161043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1161043 is about 1077.5170532293. The cubic root of 1161043 is about 105.1032393504.

Adding to 1161043 its reverse (3401611), we get a palindrome (4562654).

The spelling of 1161043 in words is "one million, one hundred sixty-one thousand, forty-three".