40020040043 has 8 divisors (see below), whose sum is σ = 43957939200. Its totient is φ = 36265299048.

The previous prime is 40020040037. The next prime is 40020040057. The reversal of 40020040043 is 34004002004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40020040043 - 2¹⁶ = 40019974507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40020040033) 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 in 7 ways as a sum of consecutive naturals, for example, 45789083 + ... + 45789956.

It is an arithmetic number, because the mean of its divisors is an integer number (5494742400).

Almost surely, 2^40020040043 is an apocalyptic number.

40020040043 is a deficient number, since it is larger than the sum of its proper divisors (3937899157).

40020040043 is a wasteful number, since it uses less digits than its factorization.

40020040043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91579081.

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 40020040043 its reverse (34004002004), we get a palindrome (74024042047).

The spelling of 40020040043 in words is "forty billion, twenty million, forty thousand, forty-three".