40240442443 has 8 divisors (see below), whose sum is σ = 41088657456. Its totient is φ = 39395522400.

The previous prime is 40240442413. The next prime is 40240442477. The reversal of 40240442443 is 34424404204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40240442443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40240442413) 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, 799053 + ... + 847918.

It is an arithmetic number, because the mean of its divisors is an integer number (5136082182).

Almost surely, 2^40240442443 is an apocalyptic number.

40240442443 is a deficient number, since it is larger than the sum of its proper divisors (848215013).

40240442443 is a wasteful number, since it uses less digits than its factorization.

40240442443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647485.

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 40240442443 its reverse (34424404204), we get a palindrome (74664846647).

The spelling of 40240442443 in words is "forty billion, two hundred forty million, four hundred forty-two thousand, four hundred forty-three".