42520366 has 32 divisors (see below), whose sum is σ = 81250560. Its totient is φ = 16246656.

The previous prime is 42520337. The next prime is 42520367. The reversal of 42520366 is 66302524.

It is a happy number.

42520366 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 (42520367) 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 15 ways as a sum of consecutive naturals, for example, 180 + ... + 9223.

It is an arithmetic number, because the mean of its divisors is an integer number (2539080).

Almost surely, 2^42520366 is an apocalyptic number.

42520366 is a deficient number, since it is larger than the sum of its proper divisors (38730194).

42520366 is a wasteful number, since it uses less digits than its factorization.

42520366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9448.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 42520366 is about 6520.7642190161. The cubic root of 42520366 is about 349.0323366397.

The spelling of 42520366 in words is "forty-two million, five hundred twenty thousand, three hundred sixty-six".