1142345143 has 4 divisors (see below), whose sum is σ = 1143527440. Its totient is φ = 1141162848.

The previous prime is 1142345131. The next prime is 1142345153. The reversal of 1142345143 is 3415432411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3415432411 = 1621 ⋅2106991.

It is a cyclic number.

It is not a de Polignac number, because 1142345143 - 2²¹ = 1140247991 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 (1142345153) 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, 589698 + ... + 591631.

It is an arithmetic number, because the mean of its divisors is an integer number (285881860).

Almost surely, 2^1142345143 is an apocalyptic number.

1142345143 is a deficient number, since it is larger than the sum of its proper divisors (1182297).

1142345143 is an equidigital number, since it uses as much as digits as its factorization.

1142345143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182296.

The product of its digits is 5760, while the sum is 28.

The square root of 1142345143 is about 33798.5967608124. The cubic root of 1142345143 is about 1045.3597634948.

Adding to 1142345143 its reverse (3415432411), we get a palindrome (4557777554).

The spelling of 1142345143 in words is "one billion, one hundred forty-two million, three hundred forty-five thousand, one hundred forty-three".