111142242 has 12 divisors (see below), whose sum is σ = 240808230. Its totient is φ = 37047408.

The previous prime is 111142237. The next prime is 111142259. The reversal of 111142242 is 242241111.

It can be written as a sum of positive squares in only one way, i.e., 104837121 + 6305121 = 10239^2 + 2511^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6174569 = 111142242 / (1 + 1 + 1 + 1 + 4 + 2 + 2 + 4 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3087267 + ... + 3087302.

Almost surely, 2^111142242 is an apocalyptic number.

111142242 is an abundant number, since it is smaller than the sum of its proper divisors (129665988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111142242 is a wasteful number, since it uses less digits than its factorization.

111142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6174577 (or 6174574 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 111142242 is about 10542.4020981938. The cubic root of 111142242 is about 480.7947510877.

Adding to 111142242 its reverse (242241111), we get a palindrome (353383353).

The spelling of 111142242 in words is "one hundred eleven million, one hundred forty-two thousand, two hundred forty-two".