420522 has 16 divisors (see below), whose sum is σ = 850080. Its totient is φ = 138672.

The previous prime is 420521. The next prime is 420551. The reversal of 420522 is 225024.

420522 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420521) 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, 333 + ... + 975.

It is an arithmetic number, because the mean of its divisors is an integer number (53130).

2⁴²⁰⁵²² is an apocalyptic number.

420522 is an abundant number, since it is smaller than the sum of its proper divisors (429558).

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

420522 is a wasteful number, since it uses less digits than its factorization.

420522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 420522 is about 648.4766765274. The cubic root of 420522 is about 74.9197363562.

Adding to 420522 its reverse (225024), we get a palindrome (645546).

The spelling of 420522 in words is "four hundred twenty thousand, five hundred twenty-two".