40243163 has 2 divisors, whose sum is σ = 40243164. Its totient is φ = 40243162.

The previous prime is 40243117. The next prime is 40243171. The reversal of 40243163 is 36134204.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40243163 - 2²⁴ = 23465947 is a prime.

It is not a weakly prime, because it can be changed into another prime (40243183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121581 + 20121582.

It is an arithmetic number, because the mean of its divisors is an integer number (20121582).

Almost surely, 2^40243163 is an apocalyptic number.

40243163 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243163 is an equidigital number, since it uses as much as digits as its factorization.

40243163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 40243163 is about 6343.7499162562. The cubic root of 40243163 is about 342.6867945846.

Adding to 40243163 its reverse (36134204), we get a palindrome (76377367).

The spelling of 40243163 in words is "forty million, two hundred forty-three thousand, one hundred sixty-three".