4126221 has 30 divisors (see below), whose sum is σ = 6791246. Its totient is φ = 2494800.

The previous prime is 4126201. The next prime is 4126247. The reversal of 4126221 is 1226214.

4126221 is a `hidden beast` number, since 41 + 2 + 622 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2205225 + 1920996 = 1485^2 + 1386^2 .

It is not a de Polignac number, because 4126221 - 2⁷ = 4126093 is a prime.

4126221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4126194 and 4126203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4126201) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9591 + ... + 10011.

Almost surely, 2^4126221 is an apocalyptic number.

It is an amenable number.

4126221 is a deficient number, since it is larger than the sum of its proper divisors (2665025).

4126221 is a wasteful number, since it uses less digits than its factorization.

4126221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 435 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 4126221 is about 2031.3101683396. The cubic root of 4126221 is about 160.3925387748.

It can be divided in two parts, 41 and 26221, that added together give a palindrome (26262).

The spelling of 4126221 in words is "four million, one hundred twenty-six thousand, two hundred twenty-one".