42502573 has 4 divisors (see below), whose sum is σ = 42980220. Its totient is φ = 42024928.

The previous prime is 42502561. The next prime is 42502591. The reversal of 42502573 is 37520524.

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 3602404 + 38900169 = 1898^2 + 6237^2 .

It is a cyclic number.

It is not a de Polignac number, because 42502573 - 2⁵ = 42502541 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42502513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238690 + ... + 238867.

It is an arithmetic number, because the mean of its divisors is an integer number (10745055).

Almost surely, 2^42502573 is an apocalyptic number.

It is an amenable number.

42502573 is a deficient number, since it is larger than the sum of its proper divisors (477647).

42502573 is an equidigital number, since it uses as much as digits as its factorization.

42502573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477646.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 42502573 is about 6519.3997423076. The cubic root of 42502573 is about 348.9836446880.

The spelling of 42502573 in words is "forty-two million, five hundred two thousand, five hundred seventy-three".