1142102143 has 24 divisors (see below), whose sum is σ = 1514942352. Its totient is φ = 850477824.

The previous prime is 1142102119. The next prime is 1142102189. The reversal of 1142102143 is 3412012411.

It is not a de Polignac number, because 1142102143 - 2⁵ = 1142102111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142102143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142102113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41905 + ... + 63562.

It is an arithmetic number, because the mean of its divisors is an integer number (63122598).

Almost surely, 2^1142102143 is an apocalyptic number.

1142102143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1142102143 is a deficient number, since it is larger than the sum of its proper divisors (372840209).

1142102143 is a wasteful number, since it uses less digits than its factorization.

1142102143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105511 (or 105504 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1142102143 is about 33795.0017458203. The cubic root of 1142102143 is about 1045.2856351579.

Adding to 1142102143 its reverse (3412012411), we get a palindrome (4554114554).

It can be divided in two parts, 1142 and 102143, that added together give a triangular number (103285 = T₄₅₄).

The spelling of 1142102143 in words is "one billion, one hundred forty-two million, one hundred two thousand, one hundred forty-three".