43002143 has 4 divisors (see below), whose sum is σ = 43276200. Its totient is φ = 42728088.

The previous prime is 43002121. The next prime is 43002173. The reversal of 43002143 is 34120034.

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 43002143 - 2⁸ = 43001887 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 (43002173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136793 + ... + 137106.

It is an arithmetic number, because the mean of its divisors is an integer number (10819050).

Almost surely, 2^43002143 is an apocalyptic number.

43002143 is a deficient number, since it is larger than the sum of its proper divisors (274057).

43002143 is a wasteful number, since it uses less digits than its factorization.

43002143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274056.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 43002143 is about 6557.6019244843. The cubic root of 43002143 is about 350.3456259281.

Adding to 43002143 its reverse (34120034), we get a palindrome (77122177).

The spelling of 43002143 in words is "forty-three million, two thousand, one hundred forty-three".