42873517 has 4 divisors (see below), whose sum is σ = 42887520. Its totient is φ = 42859516.

The previous prime is 42873503. The next prime is 42873529. The reversal of 42873517 is 71537824.

42873517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42873517 - 2¹¹ = 42871469 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 (42873547) 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 3 ways as a sum of consecutive naturals, for example, 217 + ... + 9262.

It is an arithmetic number, because the mean of its divisors is an integer number (10721880).

Almost surely, 2^42873517 is an apocalyptic number.

It is an amenable number.

42873517 is a deficient number, since it is larger than the sum of its proper divisors (14003).

42873517 is an equidigital number, since it uses as much as digits as its factorization.

42873517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14002.

The product of its digits is 47040, while the sum is 37.

The square root of 42873517 is about 6547.7871834689. The cubic root of 42873517 is about 349.9959645793.

The spelling of 42873517 in words is "forty-two million, eight hundred seventy-three thousand, five hundred seventeen".