40340443243 has 8 divisors (see below), whose sum is σ = 41739817680. Its totient is φ = 38941623840.

The previous prime is 40340443211. The next prime is 40340443393. The reversal of 40340443243 is 34234404304.

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 40340443243 - 2⁵ = 40340443211 is a prime.

It is a super-2 number, since 2×40340443243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40340443043) 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, 11913 + ... + 284293.

It is an arithmetic number, because the mean of its divisors is an integer number (5217477210).

Almost surely, 2^40340443243 is an apocalyptic number.

40340443243 is a deficient number, since it is larger than the sum of its proper divisors (1399374437).

40340443243 is a wasteful number, since it uses less digits than its factorization.

40340443243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277517.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 40340443243 its reverse (34234404304), we get a palindrome (74574847547).

The spelling of 40340443243 in words is "forty billion, three hundred forty million, four hundred forty-three thousand, two hundred forty-three".