42230522 has 4 divisors (see below), whose sum is σ = 63345786. Its totient is φ = 21115260.

The previous prime is 42230519. The next prime is 42230527. The reversal of 42230522 is 22503224.

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., 26635921 + 15594601 = 5161^2 + 3949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42230494 and 42230503.

It is not an unprimeable number, because it can be changed into a prime (42230527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10557629 + ... + 10557632.

Almost surely, 2^42230522 is an apocalyptic number.

42230522 is a deficient number, since it is larger than the sum of its proper divisors (21115264).

42230522 is a wasteful number, since it uses less digits than its factorization.

42230522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21115263.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42230522 is about 6498.5015195813. The cubic root of 42230522 is about 348.2374573909.

Adding to 42230522 its reverse (22503224), we get a palindrome (64733746).

The spelling of 42230522 in words is "forty-two million, two hundred thirty thousand, five hundred twenty-two".