4262221 has 4 divisors (see below), whose sum is σ = 4399744. Its totient is φ = 4124700.

The previous prime is 4262197. The next prime is 4262233. The reversal of 4262221 is 1222624.

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 a cyclic number.

It is not a de Polignac number, because 4262221 - 2⁹ = 4261709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4262261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68715 + ... + 68776.

It is an arithmetic number, because the mean of its divisors is an integer number (1099936).

Almost surely, 2^4262221 is an apocalyptic number.

It is an amenable number.

4262221 is a deficient number, since it is larger than the sum of its proper divisors (137523).

4262221 is a wasteful number, since it uses less digits than its factorization.

4262221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137522.

The product of its digits is 384, while the sum is 19.

The square root of 4262221 is about 2064.5147129531. The cubic root of 4262221 is about 162.1357014666.

Adding to 4262221 its reverse (1222624), we get a palindrome (5484845).

The spelling of 4262221 in words is "four million, two hundred sixty-two thousand, two hundred twenty-one".