40324243 has 2 divisors, whose sum is σ = 40324244. Its totient is φ = 40324242.

The previous prime is 40324231. The next prime is 40324247. The reversal of 40324243 is 34242304.

40324243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40324243 is a prime.

It is not a weakly prime, because it can be changed into another prime (40324247) 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, 20162121 + 20162122.

It is an arithmetic number, because the mean of its divisors is an integer number (20162122).

Almost surely, 2^40324243 is an apocalyptic number.

40324243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40324243 is an equidigital number, since it uses as much as digits as its factorization.

40324243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 40324243 is about 6350.1372426114. The cubic root of 40324243 is about 342.9167831848.

Adding to 40324243 its reverse (34242304), we get a palindrome (74566547).

The spelling of 40324243 in words is "forty million, three hundred twenty-four thousand, two hundred forty-three".