42273538 has 4 divisors (see below), whose sum is σ = 63410310. Its totient is φ = 21136768.

The previous prime is 42273527. The next prime is 42273541. The reversal of 42273538 is 83537224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23843689 + 18429849 = 4883^2 + 4293^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10568383 + ... + 10568386.

Almost surely, 2^42273538 is an apocalyptic number.

42273538 is a deficient number, since it is larger than the sum of its proper divisors (21136772).

42273538 is a wasteful number, since it uses less digits than its factorization.

42273538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21136771.

The product of its digits is 40320, while the sum is 34.

The square root of 42273538 is about 6501.8103632758. The cubic root of 42273538 is about 348.3556554658.

The spelling of 42273538 in words is "forty-two million, two hundred seventy-three thousand, five hundred thirty-eight".