40120320443 has 4 divisors (see below), whose sum is σ = 45851794800. Its totient is φ = 34388846088.

The previous prime is 40120320439. The next prime is 40120320469. The reversal of 40120320443 is 34402302104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40120320443 - 2² = 40120320439 is a prime.

It is a super-2 number, since 2×40120320443² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40120320343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2865737168 + ... + 2865737181.

It is an arithmetic number, because the mean of its divisors is an integer number (11462948700).

Almost surely, 2^40120320443 is an apocalyptic number.

40120320443 is a deficient number, since it is larger than the sum of its proper divisors (5731474357).

40120320443 is an equidigital number, since it uses as much as digits as its factorization.

40120320443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731474356.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40120320443 its reverse (34402302104), we get a palindrome (74522622547).

The spelling of 40120320443 in words is "forty billion, one hundred twenty million, three hundred twenty thousand, four hundred forty-three".