4642221 has 4 divisors (see below), whose sum is σ = 6189632. Its totient is φ = 3094812.

The previous prime is 4642199. The next prime is 4642223. The reversal of 4642221 is 1222464.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4642221 - 2⁷ = 4642093 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4642223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773701 + ... + 773706.

It is an arithmetic number, because the mean of its divisors is an integer number (1547408).

Almost surely, 2^4642221 is an apocalyptic number.

It is an amenable number.

4642221 is a deficient number, since it is larger than the sum of its proper divisors (1547411).

4642221 is a wasteful number, since it uses less digits than its factorization.

4642221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547410.

The product of its digits is 768, while the sum is 21.

The square root of 4642221 is about 2154.5813978590. The cubic root of 4642221 is about 166.8176263369.

Adding to 4642221 its reverse (1222464), we get a palindrome (5864685).

The spelling of 4642221 in words is "four million, six hundred forty-two thousand, two hundred twenty-one".