112005143 has 4 divisors (see below), whose sum is σ = 112260720. Its totient is φ = 111749568.

The previous prime is 112005119. The next prime is 112005149. The reversal of 112005143 is 341500211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 112005143 - 2⁸ = 112004887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112005149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127130 + ... + 128007.

It is an arithmetic number, because the mean of its divisors is an integer number (28065180).

Almost surely, 2^112005143 is an apocalyptic number.

112005143 is a deficient number, since it is larger than the sum of its proper divisors (255577).

112005143 is an equidigital number, since it uses as much as digits as its factorization.

112005143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255576.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 112005143 is about 10583.2482253796. The cubic root of 112005143 is about 482.0358309136.

Adding to 112005143 its reverse (341500211), we get a palindrome (453505354).

The spelling of 112005143 in words is "one hundred twelve million, five thousand, one hundred forty-three".