40081043 has 2 divisors, whose sum is σ = 40081044. Its totient is φ = 40081042.

The previous prime is 40081037. The next prime is 40081081. The reversal of 40081043 is 34018004.

40081043 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 40081043 - 2⁶ = 40080979 is a prime.

It is not a weakly prime, because it can be changed into another prime (40086043) 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, 20040521 + 20040522.

It is an arithmetic number, because the mean of its divisors is an integer number (20040522).

Almost surely, 2^40081043 is an apocalyptic number.

40081043 is a deficient number, since it is larger than the sum of its proper divisors (1).

40081043 is an equidigital number, since it uses as much as digits as its factorization.

40081043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 40081043 is about 6330.9590900589. The cubic root of 40081043 is about 342.2260028247.

Adding to 40081043 its reverse (34018004), we get a palindrome (74099047).

The spelling of 40081043 in words is "forty million, eighty-one thousand, forty-three".