2142043543 has 4 divisors (see below), whose sum is σ = 2142168448. Its totient is φ = 2141918640.

The previous prime is 2142043529. The next prime is 2142043573. The reversal of 2142043543 is 3453402412.

It is a happy number.

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 2142043543 - 2⁵ = 2142043511 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 (2142043523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31671 + ... + 72712.

It is an arithmetic number, because the mean of its divisors is an integer number (535542112).

Almost surely, 2^2142043543 is an apocalyptic number.

2142043543 is a deficient number, since it is larger than the sum of its proper divisors (124905).

2142043543 is a wasteful number, since it uses less digits than its factorization.

2142043543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124904.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2142043543 is about 46282.2162714795. The cubic root of 2142043543 is about 1289.0688035628.

Adding to 2142043543 its reverse (3453402412), we get a palindrome (5595445955).

The spelling of 2142043543 in words is "two billion, one hundred forty-two million, forty-three thousand, five hundred forty-three".