42965617 has 4 divisors (see below), whose sum is σ = 44447220. Its totient is φ = 41484016.

The previous prime is 42965609. The next prime is 42965627. The reversal of 42965617 is 71656924.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36493681 + 6471936 = 6041^2 + 2544^2 .

It is a cyclic number.

It is not a de Polignac number, because 42965617 - 2³ = 42965609 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42965617.

It is not an unprimeable number, because it can be changed into a prime (42965627) 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, 740758 + ... + 740815.

It is an arithmetic number, because the mean of its divisors is an integer number (11111805).

Almost surely, 2^42965617 is an apocalyptic number.

It is an amenable number.

42965617 is a deficient number, since it is larger than the sum of its proper divisors (1481603).

42965617 is a wasteful number, since it uses less digits than its factorization.

42965617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481602.

The product of its digits is 90720, while the sum is 40.

The square root of 42965617 is about 6554.8163208438. The cubic root of 42965617 is about 350.2464033597.

The spelling of 42965617 in words is "forty-two million, nine hundred sixty-five thousand, six hundred seventeen".