43138143 has 16 divisors (see below), whose sum is σ = 65971200. Its totient is φ = 27830520.

The previous prime is 43138141. The next prime is 43138153. The reversal of 43138143 is 34183134.

It is not a de Polignac number, because 43138143 - 2¹ = 43138141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43138141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24933 + ... + 26606.

It is an arithmetic number, because the mean of its divisors is an integer number (4123200).

Almost surely, 2^43138143 is an apocalyptic number.

43138143 is a deficient number, since it is larger than the sum of its proper divisors (22833057).

43138143 is a wasteful number, since it uses less digits than its factorization.

43138143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51579 (or 51573 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 43138143 is about 6567.9633829674. The cubic root of 43138143 is about 350.7145754724.

Subtracting from 43138143 its sum of digits (27), we obtain a triangular number (43138116 = T₉₂₈₈).

The spelling of 43138143 in words is "forty-three million, one hundred thirty-eight thousand, one hundred forty-three".