4042220 has 48 divisors (see below), whose sum is σ = 10452288. Its totient is φ = 1278720.

The previous prime is 4042217. The next prime is 4042249. The reversal of 4042220 is 222404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 4042195 and 4042204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 710 + ... + 2930.

It is an arithmetic number, because the mean of its divisors is an integer number (217756).

Almost surely, 2^4042220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4042220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5226144).

4042220 is an abundant number, since it is smaller than the sum of its proper divisors (6410068).

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

4042220 is a wasteful number, since it uses less digits than its factorization.

4042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250 (or 2248 counting only the distinct ones).

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

The square root of 4042220 is about 2010.5272940202. The cubic root of 4042220 is about 159.2966522510.

Adding to 4042220 its reverse (222404), we get a palindrome (4264624).

The spelling of 4042220 in words is "four million, forty-two thousand, two hundred twenty".