1147243 has 2 divisors, whose sum is σ = 1147244. Its totient is φ = 1147242.

The previous prime is 1147231. The next prime is 1147247. The reversal of 1147243 is 3427411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1147243 - 2⁹ = 1146731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1147247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573621 + 573622.

It is an arithmetic number, because the mean of its divisors is an integer number (573622).

2^1147243 is an apocalyptic number.

1147243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147243 is an equidigital number, since it uses as much as digits as its factorization.

1147243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 22.

The square root of 1147243 is about 1071.0943002369. The cubic root of 1147243 is about 104.6851642607.

The spelling of 1147243 in words is "one million, one hundred forty-seven thousand, two hundred forty-three".