40442320111 has 4 divisors (see below), whose sum is σ = 40842739224. Its totient is φ = 40041901000.

The previous prime is 40442320109. The next prime is 40442320133. The reversal of 40442320111 is 11102324404.

It is a happy number.

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 40442320111 - 2¹ = 40442320109 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40442320151) 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, 200209405 + ... + 200209606.

It is an arithmetic number, because the mean of its divisors is an integer number (10210684806).

Almost surely, 2^40442320111 is an apocalyptic number.

40442320111 is a deficient number, since it is larger than the sum of its proper divisors (400419113).

40442320111 is a wasteful number, since it uses less digits than its factorization.

40442320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400419112.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 40442320111 its reverse (11102324404), we get a palindrome (51544644515).

The spelling of 40442320111 in words is "forty billion, four hundred forty-two million, three hundred twenty thousand, one hundred eleven".