4222420 has 24 divisors (see below), whose sum is σ = 9015048. Its totient is φ = 1660800.

The previous prime is 4222399. The next prime is 4222483. The reversal of 4222420 is 242224.

It can be written as a sum of positive squares in 4 ways, for example, as 85264 + 4137156 = 292^2 + 2034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4222394 and 4222403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511 + ... + 2950.

It is an arithmetic number, because the mean of its divisors is an integer number (375627).

Almost surely, 2^4222420 is an apocalyptic number.

It is an amenable number.

4222420 is an abundant number, since it is smaller than the sum of its proper divisors (4792628).

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

4222420 is a wasteful number, since it uses less digits than its factorization.

4222420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531 (or 3529 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 4222420 is about 2054.8527927810. The cubic root of 4222420 is about 161.6294431370.

Adding to 4222420 its reverse (242224), we get a palindrome (4464644).

The spelling of 4222420 in words is "four million, two hundred twenty-two thousand, four hundred twenty".