2143442023 has 4 divisors (see below), whose sum is σ = 2153600728. Its totient is φ = 2133283320.

The previous prime is 2143441999. The next prime is 2143442039. The reversal of 2143442023 is 3202443412.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143442023 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 (2143442053) 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, 5079036 + ... + 5079457.

It is an arithmetic number, because the mean of its divisors is an integer number (538400182).

Almost surely, 2^2143442023 is an apocalyptic number.

2143442023 is a deficient number, since it is larger than the sum of its proper divisors (10158705).

2143442023 is a wasteful number, since it uses less digits than its factorization.

2143442023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10158704.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2143442023 is about 46297.3219851861. The cubic root of 2143442023 is about 1289.3492747932.

Adding to 2143442023 its reverse (3202443412), we get a palindrome (5345885435).

The spelling of 2143442023 in words is "two billion, one hundred forty-three million, four hundred forty-two thousand, twenty-three".