42566526 has 64 divisors (see below), whose sum is σ = 97977600. Its totient is φ = 13691808.

The previous prime is 42566509. The next prime is 42566527. The reversal of 42566526 is 62566524.

42566526 is a `hidden beast` number, since 42 + 566 + 52 + 6 = 666.

42566526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306165 + ... + 306303.

It is an arithmetic number, because the mean of its divisors is an integer number (1530900).

Almost surely, 2^42566526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42566526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48988800).

42566526 is an abundant number, since it is smaller than the sum of its proper divisors (55411074).

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

42566526 is a wasteful number, since it uses less digits than its factorization.

42566526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 304 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 42566526 is about 6524.3027213642. The cubic root of 42566526 is about 349.1585938316.

The spelling of 42566526 in words is "forty-two million, five hundred sixty-six thousand, five hundred twenty-six".