111540612 has 48 divisors (see below), whose sum is σ = 270768960. Its totient is φ = 35693952.

The previous prime is 111540601. The next prime is 111540617. The reversal of 111540612 is 216045111.

It is a super-3 number, since 3×111540612³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111540617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67743 + ... + 69369.

It is an arithmetic number, because the mean of its divisors is an integer number (5641020).

Almost surely, 2^111540612 is an apocalyptic number.

111540612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111540612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135384480).

111540612 is an abundant number, since it is smaller than the sum of its proper divisors (159228348).

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

111540612 is a wasteful number, since it uses less digits than its factorization.

111540612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 1858 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 111540612 is about 10561.2788998303. The cubic root of 111540612 is about 481.3685077915.

Adding to 111540612 its reverse (216045111), we get a palindrome (327585723).

The spelling of 111540612 in words is "one hundred eleven million, five hundred forty thousand, six hundred twelve".