4226021 has 4 divisors (see below), whose sum is σ = 4231500. Its totient is φ = 4220544.

The previous prime is 4226009. The next prime is 4226063. The reversal of 4226021 is 1206224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1288225 + 2937796 = 1135^2 + 1714^2 .

It is a cyclic number.

It is not a de Polignac number, because 4226021 - 2⁶ = 4225957 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 (4226221) 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, 1346 + ... + 3203.

It is an arithmetic number, because the mean of its divisors is an integer number (1057875).

Almost surely, 2^4226021 is an apocalyptic number.

It is an amenable number.

4226021 is a deficient number, since it is larger than the sum of its proper divisors (5479).

4226021 is an equidigital number, since it uses as much as digits as its factorization.

4226021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 4226021 is about 2055.7288245291. The cubic root of 4226021 is about 161.6753774785.

The spelling of 4226021 in words is "four million, two hundred twenty-six thousand, twenty-one".