111842 has 4 divisors (see below), whose sum is σ = 167766. Its totient is φ = 55920.

The previous prime is 111833. The next prime is 111847. The reversal of 111842 is 248111.

111842 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248111 = 227 ⋅1093.

It can be written as a sum of positive squares in only one way, i.e., 63001 + 48841 = 251^2 + 221^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111842.

It is not an unprimeable number, because it can be changed into a prime (111847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27959 + ... + 27962.

2¹¹¹⁸⁴² is an apocalyptic number.

111842 is a deficient number, since it is larger than the sum of its proper divisors (55924).

111842 is an equidigital number, since it uses as much as digits as its factorization.

111842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55923.

The product of its digits is 64, while the sum is 17.

The square root of 111842 is about 334.4278696520. The cubic root of 111842 is about 48.1801678022.

Adding to 111842 its reverse (248111), we get a palindrome (359953).

The spelling of 111842 in words is "one hundred eleven thousand, eight hundred forty-two".