42515173 has 8 divisors (see below), whose sum is σ = 43239168. Its totient is φ = 41796384.

The previous prime is 42515159. The next prime is 42515177. The reversal of 42515173 is 37151524.

It is a happy number.

42515173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42515173 - 2²⁵ = 8960741 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 (42515177) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17361 + ... + 19657.

It is an arithmetic number, because the mean of its divisors is an integer number (5404896).

Almost surely, 2^42515173 is an apocalyptic number.

It is an amenable number.

42515173 is a deficient number, since it is larger than the sum of its proper divisors (723995).

42515173 is a wasteful number, since it uses less digits than its factorization.

42515173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603.

The product of its digits is 4200, while the sum is 28.

The square root of 42515173 is about 6520.3660173337. The cubic root of 42515173 is about 349.0181269885.

Adding to 42515173 its reverse (37151524), we get a palindrome (79666697).

The spelling of 42515173 in words is "forty-two million, five hundred fifteen thousand, one hundred seventy-three".