43012871 has 4 divisors (see below), whose sum is σ = 46923144. Its totient is φ = 39102600.

The previous prime is 43012847. The next prime is 43012877. The reversal of 43012871 is 17821034.

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 43012871 - 2¹⁰ = 43011847 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43012871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43012877) 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, 1955120 + ... + 1955141.

It is an arithmetic number, because the mean of its divisors is an integer number (11730786).

Almost surely, 2^43012871 is an apocalyptic number.

43012871 is a deficient number, since it is larger than the sum of its proper divisors (3910273).

43012871 is a wasteful number, since it uses less digits than its factorization.

43012871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910272.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 43012871 is about 6558.4198554225. The cubic root of 43012871 is about 350.3747577736.

The spelling of 43012871 in words is "forty-three million, twelve thousand, eight hundred seventy-one".