42028573 has 8 divisors (see below), whose sum is σ = 45231480. Its totient is φ = 38906880.

The previous prime is 42028561. The next prime is 42028583. The reversal of 42028573 is 37582024.

It can be written as a sum of positive squares in 4 ways, for example, as 10252804 + 31775769 = 3202^2 + 5637^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-42028573 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 (42028583) 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 7 ways as a sum of consecutive naturals, for example, 19228 + ... + 21301.

It is an arithmetic number, because the mean of its divisors is an integer number (5653935).

Almost surely, 2^42028573 is an apocalyptic number.

It is an amenable number.

42028573 is a deficient number, since it is larger than the sum of its proper divisors (3202907).

42028573 is a wasteful number, since it uses less digits than its factorization.

42028573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40607.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 42028573 is about 6482.9447784167. The cubic root of 42028573 is about 347.6814724211.

The spelling of 42028573 in words is "forty-two million, twenty-eight thousand, five hundred seventy-three".