1166243 has 8 divisors (see below), whose sum is σ = 1264368. Its totient is φ = 1069344.

The previous prime is 1166237. The next prime is 1166287. The reversal of 1166243 is 3426611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166243 - 2⁴ = 1166227 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3521 + ... + 3837.

It is an arithmetic number, because the mean of its divisors is an integer number (158046).

2^1166243 is an apocalyptic number.

1166243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1166243 is a deficient number, since it is larger than the sum of its proper divisors (98125).

1166243 is a wasteful number, since it uses less digits than its factorization.

1166243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its digits is 864, while the sum is 23.

The square root of 1166243 is about 1079.9273123688. The cubic root of 1166243 is about 105.2599154133.

The spelling of 1166243 in words is "one million, one hundred sixty-six thousand, two hundred forty-three".