4022420 has 12 divisors (see below), whose sum is σ = 8447124. Its totient is φ = 1608960.

The previous prime is 4022419. The next prime is 4022437. The reversal of 4022420 is 242204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2353156 + 1669264 = 1534^2 + 1292^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4022395 and 4022404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100541 + ... + 100580.

It is an arithmetic number, because the mean of its divisors is an integer number (703927).

Almost surely, 2^4022420 is an apocalyptic number.

It is an amenable number.

4022420 is an abundant number, since it is smaller than the sum of its proper divisors (4424704).

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

4022420 is a wasteful number, since it uses less digits than its factorization.

4022420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201130 (or 201128 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4022420 is about 2005.5971679278. The cubic root of 4022420 is about 159.0361322365.

Adding to 4022420 its reverse (242204), we get a palindrome (4264624).

The spelling of 4022420 in words is "four million, twenty-two thousand, four hundred twenty".