43705145 has 16 divisors (see below), whose sum is σ = 57673728. Its totient is φ = 31530240.

The previous prime is 43705093. The next prime is 43705153. The reversal of 43705145 is 54150734.

It is not a de Polignac number, because 43705145 - 2⁸ = 43704889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3857 + ... + 10113.

It is an arithmetic number, because the mean of its divisors is an integer number (3604608).

Almost surely, 2^43705145 is an apocalyptic number.

It is an amenable number.

43705145 is a deficient number, since it is larger than the sum of its proper divisors (13968583).

43705145 is a wasteful number, since it uses less digits than its factorization.

43705145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 43705145 is about 6610.9866888385. The cubic root of 43705145 is about 352.2444738694.

Adding to 43705145 its reverse (54150734), we get a palindrome (97855879).

The spelling of 43705145 in words is "forty-three million, seven hundred five thousand, one hundred forty-five".