111021142 has 16 divisors (see below), whose sum is σ = 175964400. Its totient is φ = 52388640.

The previous prime is 111021121. The next prime is 111021151. The reversal of 111021142 is 241120111.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4792 + ... + 15652.

It is an arithmetic number, because the mean of its divisors is an integer number (10997775).

Almost surely, 2^111021142 is an apocalyptic number.

111021142 is a deficient number, since it is larger than the sum of its proper divisors (64943258).

111021142 is a wasteful number, since it uses less digits than its factorization.

111021142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11151.

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

The square root of 111021142 is about 10536.6570599977. The cubic root of 111021142 is about 480.6200638189.

Adding to 111021142 its reverse (241120111), we get a palindrome (352141253).

The spelling of 111021142 in words is "one hundred eleven million, twenty-one thousand, one hundred forty-two".