42566522 has 4 divisors (see below), whose sum is σ = 63849786. Its totient is φ = 21283260.

The previous prime is 42566509. The next prime is 42566527. The reversal of 42566522 is 22566524.

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., 37589161 + 4977361 = 6131^2 + 2231^2 .

It is not an unprimeable number, because it can be changed into a prime (42566527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10641629 + ... + 10641632.

Almost surely, 2^42566522 is an apocalyptic number.

42566522 is a deficient number, since it is larger than the sum of its proper divisors (21283264).

42566522 is a wasteful number, since it uses less digits than its factorization.

42566522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21283263.

The product of its digits is 28800, while the sum is 32.

The square root of 42566522 is about 6524.3024148180. The cubic root of 42566522 is about 349.1585828948.

The spelling of 42566522 in words is "forty-two million, five hundred sixty-six thousand, five hundred twenty-two".