1117243 has 2 divisors, whose sum is σ = 1117244. Its totient is φ = 1117242.

The previous prime is 1117199. The next prime is 1117247. The reversal of 1117243 is 3427111.

It is a strong prime.

It is an emirp because it is prime and its reverse (3427111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1117243.

It is not a weakly prime, because it can be changed into another prime (1117247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558621 + 558622.

It is an arithmetic number, because the mean of its divisors is an integer number (558622).

2^1117243 is an apocalyptic number.

1117243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117243 is an equidigital number, since it uses as much as digits as its factorization.

1117243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 19.

The square root of 1117243 is about 1056.9971617748. The cubic root of 1117243 is about 103.7645994842.

The spelling of 1117243 in words is "one million, one hundred seventeen thousand, two hundred forty-three".