43040071 has 4 divisors (see below), whose sum is σ = 43056000. Its totient is φ = 43024144.

The previous prime is 43040029. The next prime is 43040077. The reversal of 43040071 is 17004034.

It is a happy number.

43040071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43040071 - 2⁷ = 43039943 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 (43040077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2791 + ... + 9688.

It is an arithmetic number, because the mean of its divisors is an integer number (10764000).

Almost surely, 2^43040071 is an apocalyptic number.

43040071 is a deficient number, since it is larger than the sum of its proper divisors (15929).

43040071 is a wasteful number, since it uses less digits than its factorization.

43040071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15928.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 43040071 is about 6560.4931979235. The cubic root of 43040071 is about 350.4485975727.

The spelling of 43040071 in words is "forty-three million, forty thousand, seventy-one".