4218081 has 8 divisors (see below), whose sum is σ = 6427584. Its totient is φ = 2410320.

The previous prime is 4218061. The next prime is 4218103. The reversal of 4218081 is 1808124.

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

It is not a de Polignac number, because 4218081 - 2¹³ = 4209889 is a prime.

It is a super-2 number, since 2×4218081² = 35584414645122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4218001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100410 + ... + 100451.

It is an arithmetic number, because the mean of its divisors is an integer number (803448).

Almost surely, 2^4218081 is an apocalyptic number.

It is an amenable number.

4218081 is a deficient number, since it is larger than the sum of its proper divisors (2209503).

4218081 is a wasteful number, since it uses less digits than its factorization.

4218081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200871.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 4218081 is about 2053.7967280138. The cubic root of 4218081 is about 161.5740601642.

The spelling of 4218081 in words is "four million, two hundred eighteen thousand, eighty-one".