43345138 has 8 divisors (see below), whose sum is σ = 68842332. Its totient is φ = 20397696.

The previous prime is 43345091. The next prime is 43345151. The reversal of 43345138 is 83154334.

43345138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43256929 + 88209 = 6577^2 + 297^2 .

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

It is an unprimeable number.

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, 637395 + ... + 637462.

Almost surely, 2^43345138 is an apocalyptic number.

43345138 is a deficient number, since it is larger than the sum of its proper divisors (25497194).

43345138 is a wasteful number, since it uses less digits than its factorization.

43345138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274876.

The product of its digits is 17280, while the sum is 31.

The square root of 43345138 is about 6583.7024537869. The cubic root of 43345138 is about 351.2746394235.

The spelling of 43345138 in words is "forty-three million, three hundred forty-five thousand, one hundred thirty-eight".