42522220 has 48 divisors (see below), whose sum is σ = 97640928. Its totient is φ = 15459840.

The previous prime is 42522199. The next prime is 42522223. The reversal of 42522220 is 2222524.

It is not an unprimeable number, because it can be changed into a prime (42522223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16200 + ... + 18640.

It is an arithmetic number, because the mean of its divisors is an integer number (2034186).

Almost surely, 2^42522220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42522220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48820464).

42522220 is an abundant number, since it is smaller than the sum of its proper divisors (55118708).

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

42522220 is a wasteful number, since it uses less digits than its factorization.

42522220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530 (or 2528 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42522220 is about 6520.9063787176. The cubic root of 42522220 is about 349.0374094758.

Adding to 42522220 its reverse (2222524), we get a palindrome (44744744).

The spelling of 42522220 in words is "forty-two million, five hundred twenty-two thousand, two hundred twenty".