40211243 has 2 divisors, whose sum is σ = 40211244. Its totient is φ = 40211242.

The previous prime is 40211233. The next prime is 40211257. The reversal of 40211243 is 34211204.

40211243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40211243 - 2¹² = 40207147 is a prime.

It is not a weakly prime, because it can be changed into another prime (40211203) 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, 20105621 + 20105622.

It is an arithmetic number, because the mean of its divisors is an integer number (20105622).

Almost surely, 2^40211243 is an apocalyptic number.

40211243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40211243 is an equidigital number, since it uses as much as digits as its factorization.

40211243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40211243 is about 6341.2335550743. The cubic root of 40211243 is about 342.5961667196.

Adding to 40211243 its reverse (34211204), we get a palindrome (74422447).

The spelling of 40211243 in words is "forty million, two hundred eleven thousand, two hundred forty-three".