111142132 has 12 divisors (see below), whose sum is σ = 196684740. Its totient is φ = 54946496.

The previous prime is 111142127. The next prime is 111142133. The reversal of 111142132 is 231241111.

It can be written as a sum of positive squares in 2 ways, for example, as 34999056 + 76143076 = 5916^2 + 8726^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111142133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155743 + ... + 156454.

It is an arithmetic number, because the mean of its divisors is an integer number (16390395).

Almost surely, 2^111142132 is an apocalyptic number.

It is an amenable number.

111142132 is a deficient number, since it is larger than the sum of its proper divisors (85542608).

111142132 is a wasteful number, since it uses less digits than its factorization.

111142132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312290 (or 312288 counting only the distinct ones).

The product of its digits is 48, while the sum is 16.

The square root of 111142132 is about 10542.3968811651. The cubic root of 111142132 is about 480.7945924698.

Adding to 111142132 its reverse (231241111), we get a palindrome (342383243).

The spelling of 111142132 in words is "one hundred eleven million, one hundred forty-two thousand, one hundred thirty-two".