111602142 has 24 divisors (see below), whose sum is σ = 242351616. Its totient is φ = 37116576.

The previous prime is 111602087. The next prime is 111602147. The reversal of 111602142 is 241206111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111602147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1443 + ... + 15009.

It is an arithmetic number, because the mean of its divisors is an integer number (10097984).

Almost surely, 2^111602142 is an apocalyptic number.

111602142 is an abundant number, since it is smaller than the sum of its proper divisors (130749474).

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

111602142 is a wasteful number, since it uses less digits than its factorization.

111602142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14032 (or 14029 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 111602142 is about 10564.1914976964. The cubic root of 111602142 is about 481.4570051833.

Adding to 111602142 its reverse (241206111), we get a palindrome (352808253).

It can be divided in two parts, 111 and 602142, that added together give a triangular number (602253 = T₁₀₉₇).

The spelling of 111602142 in words is "one hundred eleven million, six hundred two thousand, one hundred forty-two".