4221441 has 24 divisors (see below), whose sum is σ = 7161024. Its totient is φ = 2345760.

The previous prime is 4221433. The next prime is 4221449. The reversal of 4221441 is 1441224.

4221441 is a `hidden beast` number, since 4 + 221 + 441 = 666.

It is an interprime number because it is at equal distance from previous prime (4221433) and next prime (4221449).

It is not a de Polignac number, because 4221441 - 2³ = 4221433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4221449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1426 + ... + 3236.

It is an arithmetic number, because the mean of its divisors is an integer number (298376).

Almost surely, 2^4221441 is an apocalyptic number.

It is an amenable number.

4221441 is a deficient number, since it is larger than the sum of its proper divisors (2939583).

4221441 is a wasteful number, since it uses less digits than its factorization.

4221441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861 (or 1858 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 4221441 is about 2054.6145623936. The cubic root of 4221441 is about 161.6169505020.

Adding to 4221441 its reverse (1441224), we get a palindrome (5662665).

It can be divided in two parts, 4 and 221441, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 4221441 in words is "four million, two hundred twenty-one thousand, four hundred forty-one".