111440423441 has 8 divisors (see below), whose sum is σ = 111572168904. Its totient is φ = 111308753920.

The previous prime is 111440423431. The next prime is 111440423443. The reversal of 111440423441 is 144324044111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3645744400 + 107794679041 = 60380^2 + 328321^2 .

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-111440423441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111440423443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3239765 + ... + 3273981.

It is an arithmetic number, because the mean of its divisors is an integer number (13946521113).

Almost surely, 2^111440423441 is an apocalyptic number.

It is an amenable number.

111440423441 is a deficient number, since it is larger than the sum of its proper divisors (131745463).

111440423441 is a wasteful number, since it uses less digits than its factorization.

111440423441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37971.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 111440423441 its reverse (144324044111), we get a palindrome (255764467552).

The spelling of 111440423441 in words is "one hundred eleven billion, four hundred forty million, four hundred twenty-three thousand, four hundred forty-one".