111142 has 8 divisors (see below), whose sum is σ = 169632. Its totient is φ = 54600.

The previous prime is 111127. The next prime is 111143. The reversal of 111142 is 241111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334 + ... + 577.

It is an arithmetic number, because the mean of its divisors is an integer number (21204).

2¹¹¹¹⁴² is an apocalyptic number.

111142 is a deficient number, since it is larger than the sum of its proper divisors (58490).

111142 is an equidigital number, since it uses as much as digits as its factorization.

111142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its digits is 8, while the sum is 10.

The square root of 111142 is about 333.3796634469. The cubic root of 111142 is about 48.0794402128.

Adding to 111142 its reverse (241111), we get a palindrome (352253).

It can be divided in two parts, 111 and 142, that added together give a triangular number (253 = T₂₂).

The spelling of 111142 in words is "one hundred eleven thousand, one hundred forty-two", and thus it is an iban number.