40230643 has 2 divisors, whose sum is σ = 40230644. Its totient is φ = 40230642.

The previous prime is 40230629. The next prime is 40230647. The reversal of 40230643 is 34603204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40230643 - 2⁹ = 40230131 is a prime.

It is not a weakly prime, because it can be changed into another prime (40230647) 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, 20115321 + 20115322.

It is an arithmetic number, because the mean of its divisors is an integer number (20115322).

Almost surely, 2^40230643 is an apocalyptic number.

40230643 is a deficient number, since it is larger than the sum of its proper divisors (1).

40230643 is an equidigital number, since it uses as much as digits as its factorization.

40230643 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 22.

The square root of 40230643 is about 6342.7630414513. The cubic root of 40230643 is about 342.6512532789.

Adding to 40230643 its reverse (34603204), we get a palindrome (74833847).

The spelling of 40230643 in words is "forty million, two hundred thirty thousand, six hundred forty-three".