4217121 has 12 divisors (see below), whose sum is σ = 6137040. Its totient is φ = 2790360.

The previous prime is 4217117. The next prime is 4217131. The reversal of 4217121 is 1217124.

It is not a de Polignac number, because 4217121 - 2² = 4217117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4217094 and 4217103.

It is not an unprimeable number, because it can be changed into a prime (4217111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435 + ... + 2936.

It is an arithmetic number, because the mean of its divisors is an integer number (511420).

Almost surely, 2^4217121 is an apocalyptic number.

It is an amenable number.

4217121 is a deficient number, since it is larger than the sum of its proper divisors (1919919).

4217121 is a wasteful number, since it uses less digits than its factorization.

4217121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516 (or 3513 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 4217121 is about 2053.5630012249. The cubic root of 4217121 is about 161.5618015987.

The spelling of 4217121 in words is "four million, two hundred seventeen thousand, one hundred twenty-one".