11112142 has 4 divisors (see below), whose sum is σ = 16668216. Its totient is φ = 5556070.

The previous prime is 11112137. The next prime is 11112149. The reversal of 11112142 is 24121111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24121111 = 7 ⋅3445873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778034 + ... + 2778037.

It is an arithmetic number, because the mean of its divisors is an integer number (4167054).

Almost surely, 2^11112142 is an apocalyptic number.

11112142 is a deficient number, since it is larger than the sum of its proper divisors (5556074).

11112142 is an equidigital number, since it uses as much as digits as its factorization.

11112142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556073.

The product of its digits is 16, while the sum is 13.

The square root of 11112142 is about 3333.4879630801. The cubic root of 11112142 is about 223.1512175905.

Adding to 11112142 its reverse (24121111), we get a palindrome (35233253).

The spelling of 11112142 in words is "eleven million, one hundred twelve thousand, one hundred forty-two".