42066522 has 12 divisors (see below), whose sum is σ = 91144170. Its totient is φ = 14022168.

The previous prime is 42066509. The next prime is 42066523. The reversal of 42066522 is 22566024.

42066522 is a `hidden beast` number, since 4 + 2 + 0 + 6 + 652 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29257281 + 12809241 = 5409^2 + 3579^2 .

It is not an unprimeable number, because it can be changed into a prime (42066523) 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 5 ways as a sum of consecutive naturals, for example, 1168497 + ... + 1168532.

Almost surely, 2^42066522 is an apocalyptic number.

42066522 is an abundant number, since it is smaller than the sum of its proper divisors (49077648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42066522 is a wasteful number, since it uses less digits than its factorization.

42066522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337037 (or 2337034 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 42066522 is about 6485.8709515377. The cubic root of 42066522 is about 347.7860853396.

The spelling of 42066522 in words is "forty-two million, sixty-six thousand, five hundred twenty-two".