111242 has 4 divisors (see below), whose sum is σ = 166866. Its totient is φ = 55620.

The previous prime is 111229. The next prime is 111253. The reversal of 111242 is 242111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242111 = 83 ⋅2917.

It can be written as a sum of positive squares in only one way, i.e., 109561 + 1681 = 331^2 + 41^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27809 + ... + 27812.

2¹¹¹²⁴² is an apocalyptic number.

111242 is a deficient number, since it is larger than the sum of its proper divisors (55624).

111242 is an equidigital number, since it uses as much as digits as its factorization.

111242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55623.

The product of its digits is 16, while the sum is 11.

The square root of 111242 is about 333.5296088805. The cubic root of 111242 is about 48.0938557136.

Adding to 111242 its reverse (242111), we get a palindrome (353353).

It can be divided in two parts, 111 and 242, that multiplied together give a palindrome (26862).

The spelling of 111242 in words is "one hundred eleven thousand, two hundred forty-two", and thus it is an iban number.