1112142143 has 16 divisors (see below), whose sum is σ = 1381079040. Its totient is φ = 873957600.

The previous prime is 1112142137. The next prime is 1112142169. The reversal of 1112142143 is 3412412111.

It is a cyclic number.

It is not a de Polignac number, because 1112142143 - 2⁴ = 1112142127 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 (1112142103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130748 + ... + 138993.

It is an arithmetic number, because the mean of its divisors is an integer number (86317440).

Almost surely, 2^1112142143 is an apocalyptic number.

1112142143 is a deficient number, since it is larger than the sum of its proper divisors (268936897).

1112142143 is a wasteful number, since it uses less digits than its factorization.

1112142143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269798.

The product of its digits is 192, while the sum is 20.

The square root of 1112142143 is about 33348.7952256150. The cubic root of 1112142143 is about 1036.0644351902.

Adding to 1112142143 its reverse (3412412111), we get a palindrome (4524554254).

The spelling of 1112142143 in words is "one billion, one hundred twelve million, one hundred forty-two thousand, one hundred forty-three".