42865573 has 4 divisors (see below), whose sum is σ = 44024140. Its totient is φ = 41707008.

The previous prime is 42865549. The next prime is 42865579. The reversal of 42865573 is 37556824.

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 19070689 + 23794884 = 4367^2 + 4878^2 .

It is a cyclic number.

It is not a de Polignac number, because 42865573 - 2⁹ = 42865061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42865579) 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, 579228 + ... + 579301.

It is an arithmetic number, because the mean of its divisors is an integer number (11006035).

Almost surely, 2^42865573 is an apocalyptic number.

It is an amenable number.

42865573 is a deficient number, since it is larger than the sum of its proper divisors (1158567).

42865573 is a wasteful number, since it uses less digits than its factorization.

42865573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158566.

The product of its digits is 201600, while the sum is 40.

The square root of 42865573 is about 6547.1805382164. The cubic root of 42865573 is about 349.9743464191.

The spelling of 42865573 in words is "forty-two million, eight hundred sixty-five thousand, five hundred seventy-three".