40330243 has 2 divisors, whose sum is σ = 40330244. Its totient is φ = 40330242.

The previous prime is 40330231. The next prime is 40330253. The reversal of 40330243 is 34203304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40330243 - 2¹⁷ = 40199171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40330243.

It is not a weakly prime, because it can be changed into another prime (40330253) 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 as a sum of consecutive naturals, namely, 20165121 + 20165122.

It is an arithmetic number, because the mean of its divisors is an integer number (20165122).

Almost surely, 2^40330243 is an apocalyptic number.

40330243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40330243 is an equidigital number, since it uses as much as digits as its factorization.

40330243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 40330243 is about 6350.6096557732. The cubic root of 40330243 is about 342.9337903125.

Adding to 40330243 its reverse (34203304), we get a palindrome (74533547).

The spelling of 40330243 in words is "forty million, three hundred thirty thousand, two hundred forty-three".