420222 has 16 divisors (see below), whose sum is σ = 916992. Its totient is φ = 127320.

The previous prime is 420221. The next prime is 420241. The reversal of 420222 is 222024.

It is a happy number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 420198 and 420207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420221) 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, 3118 + ... + 3249.

It is an arithmetic number, because the mean of its divisors is an integer number (57312).

2⁴²⁰²²² is an apocalyptic number.

420222 is an abundant number, since it is smaller than the sum of its proper divisors (496770).

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

420222 is a wasteful number, since it uses less digits than its factorization.

420222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6383.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 420222 is about 648.2453239322. The cubic root of 420222 is about 74.9019162280.

Adding to 420222 its reverse (222024), we get a palindrome (642246).

It can be divided in two parts, 42022 and 2, that added together give a palindrome (42024).

The spelling of 420222 in words is "four hundred twenty thousand, two hundred twenty-two", and thus it is an iban number.