4221085 has 12 divisors (see below), whose sum is σ = 5568444. Its totient is φ = 3069440.

The previous prime is 4221047. The next prime is 4221109. The reversal of 4221085 is 5801224.

It can be written as a sum of positive squares in 2 ways, for example, as 1162084 + 3059001 = 1078^2 + 1749^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4221085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2884 + ... + 4093.

It is an arithmetic number, because the mean of its divisors is an integer number (464037).

Almost surely, 2^4221085 is an apocalyptic number.

It is an amenable number.

4221085 is a deficient number, since it is larger than the sum of its proper divisors (1347359).

4221085 is a wasteful number, since it uses less digits than its factorization.

4221085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004 (or 6993 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4221085 is about 2054.5279263130. The cubic root of 4221085 is about 161.6124072467.

The spelling of 4221085 in words is "four million, two hundred twenty-one thousand, eighty-five".