1009243 has 2 divisors, whose sum is σ = 1009244. Its totient is φ = 1009242.

The previous prime is 1009237. The next prime is 1009247. The reversal of 1009243 is 3429001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1009243 is a prime.

1009243 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1009243.

It is not a weakly prime, because it can be changed into another prime (1009247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504621 + 504622.

It is an arithmetic number, because the mean of its divisors is an integer number (504622).

2^1009243 is an apocalyptic number.

1009243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009243 is an equidigital number, since it uses as much as digits as its factorization.

1009243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1009243 is about 1004.6108699392. The cubic root of 1009243 is about 100.3071555885.

The spelling of 1009243 in words is "one million, nine thousand, two hundred forty-three".