111122142 has 16 divisors (see below), whose sum is σ = 229908240. Its totient is φ = 35763392.

The previous prime is 111122117. The next prime is 111122159. The reversal of 111122142 is 241221111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319143 + ... + 319490.

It is an arithmetic number, because the mean of its divisors is an integer number (14369265).

Almost surely, 2^111122142 is an apocalyptic number.

111122142 is an abundant number, since it is smaller than the sum of its proper divisors (118786098).

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

111122142 is a wasteful number, since it uses less digits than its factorization.

111122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638667.

The product of its digits is 32, while the sum is 15.

The square root of 111122142 is about 10541.4487619112. The cubic root of 111122142 is about 480.7657655374.

Adding to 111122142 its reverse (241221111), we get a palindrome (352343253).

The spelling of 111122142 in words is "one hundred eleven million, one hundred twenty-two thousand, one hundred forty-two".