1005230243 has 2 divisors, whose sum is σ = 1005230244.
Its totient is φ = 1005230242.
The previous prime is 1005230227. The next prime is 1005230263. The reversal of 1005230243 is 3420325001.
It is a happy number.
It is an a-pointer prime, because the next prime (1005230263) can be obtained adding 1005230243 to its sum of digits (20).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1005230243 - 24 = 1005230227 is a prime.
It is not a weakly prime, because it can be changed into another prime (1005230263) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502615121 + 502615122.
It is an arithmetic number, because the mean of its divisors is an integer number (502615122).
Almost surely, 21005230243 is an apocalyptic number.
1005230243 is a deficient number, since it is larger than the sum of its proper divisors (1).
1005230243 is an equidigital number, since it uses as much as digits as its factorization.
1005230243 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 720, while the sum is 20.
The square root of 1005230243 is about 31705.3661546433.
The cubic root of 1005230243 is about 1001.7403836409.
Adding to 1005230243 its reverse (3420325001), we get a palindrome (4425555244).
The spelling of 1005230243 in words is "one billion, five million, two hundred thirty thousand, two hundred forty-three".