4128205 has 8 divisors (see below), whose sum is σ = 5028192. Its totient is φ = 3253008.

The previous prime is 4128199. The next prime is 4128217. The reversal of 4128205 is 5028214.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4128205 - 2²¹ = 2031053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5827 + ... + 6496.

It is an arithmetic number, because the mean of its divisors is an integer number (628524).

Almost surely, 2^4128205 is an apocalyptic number.

It is an amenable number.

4128205 is a deficient number, since it is larger than the sum of its proper divisors (899987).

4128205 is a wasteful number, since it uses less digits than its factorization.

4128205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12395.

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

The square root of 4128205 is about 2031.7984644152. The cubic root of 4128205 is about 160.4182416966.

Subtracting 4128205 from its reverse (5028214), we obtain a palindrome (900009).

The spelling of 4128205 in words is "four million, one hundred twenty-eight thousand, two hundred five".