42517073 has 4 divisors (see below), whose sum is σ = 42530148. Its totient is φ = 42504000.

The previous prime is 42517063. The next prime is 42517091. The reversal of 42517073 is 37071524.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 29506624 + 13010449 = 5432^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 42517073 - 2¹⁸ = 42254929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42517043) 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, 2573 + ... + 9573.

It is an arithmetic number, because the mean of its divisors is an integer number (10632537).

Almost surely, 2^42517073 is an apocalyptic number.

It is an amenable number.

42517073 is a deficient number, since it is larger than the sum of its proper divisors (13075).

42517073 is an equidigital number, since it uses as much as digits as its factorization.

42517073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13074.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 42517073 is about 6520.5117130483. The cubic root of 42517073 is about 349.0233261093.

Adding to 42517073 its reverse (37071524), we get a palindrome (79588597).

The spelling of 42517073 in words is "forty-two million, five hundred seventeen thousand, seventy-three".