43138065 has 8 divisors (see below), whose sum is σ = 69020928. Its totient is φ = 23006960.

The previous prime is 43138031. The next prime is 43138079. The reversal of 43138065 is 56083134.

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

It is not a de Polignac number, because 43138065 - 2⁶ = 43138001 is a prime.

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, 1437921 + ... + 1437950.

It is an arithmetic number, because the mean of its divisors is an integer number (8627616).

Almost surely, 2^43138065 is an apocalyptic number.

It is an amenable number.

43138065 is a deficient number, since it is larger than the sum of its proper divisors (25882863).

43138065 is a wasteful number, since it uses less digits than its factorization.

43138065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875879.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 43138065 is about 6567.9574450509. The cubic root of 43138065 is about 350.7143640914.

The spelling of 43138065 in words is "forty-three million, one hundred thirty-eight thousand, sixty-five".