111602143 has 8 divisors (see below), whose sum is σ = 117573120. Its totient is φ = 105640920.

The previous prime is 111602087. The next prime is 111602147. The reversal of 111602143 is 341206111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111602143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111602143.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41778 + ... + 44368.

It is an arithmetic number, because the mean of its divisors is an integer number (14696640).

Almost surely, 2^111602143 is an apocalyptic number.

111602143 is a deficient number, since it is larger than the sum of its proper divisors (5970977).

111602143 is a wasteful number, since it uses less digits than its factorization.

111602143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 111602143 is about 10564.1915450261. The cubic root of 111602143 is about 481.4570066213.

Adding to 111602143 its reverse (341206111), we get a palindrome (452808254).

The spelling of 111602143 in words is "one hundred eleven million, six hundred two thousand, one hundred forty-three".