4024221 has 8 divisors (see below), whose sum is σ = 5445984. Its totient is φ = 2642640.

The previous prime is 4024211. The next prime is 4024259. The reversal of 4024221 is 1224204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4024221 - 2¹¹ = 4022173 is a prime.

4024221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4024221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4024211) 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, 9810 + ... + 10211.

It is an arithmetic number, because the mean of its divisors is an integer number (680748).

Almost surely, 2^4024221 is an apocalyptic number.

It is an amenable number.

4024221 is a deficient number, since it is larger than the sum of its proper divisors (1421763).

4024221 is a wasteful number, since it uses less digits than its factorization.

4024221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20091.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4024221 is about 2006.0461111350. The cubic root of 4024221 is about 159.0598643295.

Adding to 4024221 its reverse (1224204), we get a palindrome (5248425).

The spelling of 4024221 in words is "four million, twenty-four thousand, two hundred twenty-one".