42210522 has 24 divisors (see below), whose sum is σ = 92129076. Its totient is φ = 13966656.

The previous prime is 42210521. The next prime is 42210523. The reversal of 42210522 is 22501224.

It is an interprime number because it is at equal distance from previous prime (42210521) and next prime (42210523).

It can be written as a sum of positive squares in 2 ways, for example, as 37711881 + 4498641 = 6141^2 + 2121^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 42210495 and 42210504.

It is not an unprimeable number, because it can be changed into a prime (42210521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6093 + ... + 11024.

Almost surely, 2^42210522 is an apocalyptic number.

42210522 is an abundant number, since it is smaller than the sum of its proper divisors (49918554).

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

42210522 is a wasteful number, since it uses less digits than its factorization.

42210522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17262 (or 17259 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 42210522 is about 6496.9625210555. The cubic root of 42210522 is about 348.1824746550.

Adding to 42210522 its reverse (22501224), we get a palindrome (64711746).

The spelling of 42210522 in words is "forty-two million, two hundred ten thousand, five hundred twenty-two".