42105522 has 16 divisors (see below), whose sum is σ = 84591360. Its totient is φ = 13971792.

The previous prime is 42105493. The next prime is 42105523. The reversal of 42105522 is 22550124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42105523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14397 + ... + 17072.

It is an arithmetic number, because the mean of its divisors is an integer number (5286960).

Almost surely, 2^42105522 is an apocalyptic number.

42105522 is an abundant number, since it is smaller than the sum of its proper divisors (42485838).

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

42105522 is a wasteful number, since it uses less digits than its factorization.

42105522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31697.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42105522 is about 6488.8767903236. The cubic root of 42105522 is about 347.8935299868.

Adding to 42105522 its reverse (22550124), we get a palindrome (64655646).

The spelling of 42105522 in words is "forty-two million, one hundred five thousand, five hundred twenty-two".