42573533 has 4 divisors (see below), whose sum is σ = 42844860. Its totient is φ = 42302208.

The previous prime is 42573523. The next prime is 42573563. The reversal of 42573533 is 33537524.

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 25623844 + 16949689 = 5062^2 + 4117^2 .

It is a cyclic number.

It is not a de Polignac number, because 42573533 - 2⁸ = 42573277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42573533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42573523) 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, 135428 + ... + 135741.

It is an arithmetic number, because the mean of its divisors is an integer number (10711215).

Almost surely, 2^42573533 is an apocalyptic number.

It is an amenable number.

42573533 is a deficient number, since it is larger than the sum of its proper divisors (271327).

42573533 is a wasteful number, since it uses less digits than its factorization.

42573533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271326.

The product of its digits is 37800, while the sum is 32.

The square root of 42573533 is about 6524.8396915173. The cubic root of 42573533 is about 349.1777514520.

The spelling of 42573533 in words is "forty-two million, five hundred seventy-three thousand, five hundred thirty-three".