43120043 has 4 divisors (see below), whose sum is σ = 43292088. Its totient is φ = 42948000.

The previous prime is 43120027. The next prime is 43120057. The reversal of 43120043 is 34002134.

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 43120043 - 2⁴ = 43120027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43120093) 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, 85646 + ... + 86147.

It is an arithmetic number, because the mean of its divisors is an integer number (10823022).

Almost surely, 2^43120043 is an apocalyptic number.

43120043 is a deficient number, since it is larger than the sum of its proper divisors (172045).

43120043 is a wasteful number, since it uses less digits than its factorization.

43120043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172044.

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

The square root of 43120043 is about 6566.5853379058. The cubic root of 43120043 is about 350.6655174045.

Adding to 43120043 its reverse (34002134), we get a palindrome (77122177).

The spelling of 43120043 in words is "forty-three million, one hundred twenty thousand, forty-three".