42522090 has 48 divisors (see below), whose sum is σ = 110520288. Its totient is φ = 10465728.

The previous prime is 42522089. The next prime is 42522107. The reversal of 42522090 is 9022524.

42522090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42522090.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 877 + ... + 9263.

It is an arithmetic number, because the mean of its divisors is an integer number (2302506).

Almost surely, 2^42522090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42522090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55260144).

42522090 is an abundant number, since it is smaller than the sum of its proper divisors (67998198).

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

42522090 is a wasteful number, since it uses less digits than its factorization.

42522090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8423 (or 8410 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 42522090 is about 6520.8964107705. The cubic root of 42522090 is about 349.0370537802.

The spelling of 42522090 in words is "forty-two million, five hundred twenty-two thousand, ninety".