43120345 has 8 divisors (see below), whose sum is σ = 52008264. Its totient is φ = 34320384.

The previous prime is 43120277. The next prime is 43120369. The reversal of 43120345 is 54302134.

It can be written as a sum of positive squares in 4 ways, for example, as 4481689 + 38638656 = 2117^2 + 6216^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43120345 - 2⁹ = 43119833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20904 + ... + 22873.

It is an arithmetic number, because the mean of its divisors is an integer number (6501033).

Almost surely, 2^43120345 is an apocalyptic number.

It is an amenable number.

43120345 is a deficient number, since it is larger than the sum of its proper divisors (8887919).

43120345 is a wasteful number, since it uses less digits than its factorization.

43120345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43979.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 43120345 is about 6566.6083330742. The cubic root of 43120345 is about 350.6663360550. Note that the first 3 decimals are identical.

Adding to 43120345 its reverse (54302134), we get a palindrome (97422479).

The spelling of 43120345 in words is "forty-three million, one hundred twenty thousand, three hundred forty-five".