4218257 has 8 divisors (see below), whose sum is σ = 4344384. Its totient is φ = 4093488.

The previous prime is 4218251. The next prime is 4218271. The reversal of 4218257 is 7528124.

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 4218257 - 2⁴ = 4218241 is a prime.

It is a d-powerful number, because it can be written as 4³ + 2¹³ + 1 + 8² + 2²² + 5⁶ + 7 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4218251) 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, 11123 + ... + 11495.

It is an arithmetic number, because the mean of its divisors is an integer number (543048).

Almost surely, 2^4218257 is an apocalyptic number.

It is an amenable number.

4218257 is a deficient number, since it is larger than the sum of its proper divisors (126127).

4218257 is a wasteful number, since it uses less digits than its factorization.

4218257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its digits is 4480, while the sum is 29.

The square root of 4218257 is about 2053.8395750399. The cubic root of 4218257 is about 161.5763073661.

The spelling of 4218257 in words is "four million, two hundred eighteen thousand, two hundred fifty-seven".