111742 has 4 divisors (see below), whose sum is σ = 167616. Its totient is φ = 55870.

The previous prime is 111733. The next prime is 111751. The reversal of 111742 is 247111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247111 = 61 ⋅4051.

It is an interprime number because it is at equal distance from previous prime (111733) and next prime (111751).

It is a congruent number.

It is an unprimeable number.

111742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27934 + ... + 27937.

It is an arithmetic number, because the mean of its divisors is an integer number (41904).

2¹¹¹⁷⁴² is an apocalyptic number.

111742 is a deficient number, since it is larger than the sum of its proper divisors (55874).

111742 is an equidigital number, since it uses as much as digits as its factorization.

111742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55873.

The product of its digits is 56, while the sum is 16.

The square root of 111742 is about 334.2783271467. The cubic root of 111742 is about 48.1658039274.

Adding to 111742 its reverse (247111), we get a palindrome (358853).

The spelling of 111742 in words is "one hundred eleven thousand, seven hundred forty-two", and thus it is an iban number.