111440240420 has 24 divisors (see below), whose sum is σ = 247790652984. Its totient is φ = 41953972736.

The previous prime is 111440240399. The next prime is 111440240449. The reversal of 111440240420 is 24042044111.

It can be written as a sum of positive squares in 4 ways, for example, as 25572487396 + 85867753024 = 159914^2 + 293032^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163882367 + ... + 163883046.

It is an arithmetic number, because the mean of its divisors is an integer number (10324610541).

Almost surely, 2^111440240420 is an apocalyptic number.

111440240420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111440240420 is an abundant number, since it is smaller than the sum of its proper divisors (136350412564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111440240420 is a wasteful number, since it uses less digits than its factorization.

111440240420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327765439 (or 327765437 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 111440240420 its reverse (24042044111), we get a palindrome (135482284531).

The spelling of 111440240420 in words is "one hundred eleven billion, four hundred forty million, two hundred forty thousand, four hundred twenty".