4243215 has 8 divisors (see below), whose sum is σ = 6789168. Its totient is φ = 2263040.

The previous prime is 4243199. The next prime is 4243219. The reversal of 4243215 is 5123424.

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

It is not a de Polignac number, because 4243215 - 2⁴ = 4243199 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 2¹³ + 4¹¹ + 3⁶ + 2¹⁵ + 1 + 5⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 4243191 and 4243200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4243219) 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, 141426 + ... + 141455.

It is an arithmetic number, because the mean of its divisors is an integer number (848646).

Almost surely, 2^4243215 is an apocalyptic number.

4243215 is a deficient number, since it is larger than the sum of its proper divisors (2545953).

4243215 is a wasteful number, since it uses less digits than its factorization.

4243215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282889.

The product of its digits is 960, while the sum is 21.

The square root of 4243215 is about 2059.9065512785. The cubic root of 4243215 is about 161.8943450691.

Adding to 4243215 its reverse (5123424), we get a palindrome (9366639).

The spelling of 4243215 in words is "four million, two hundred forty-three thousand, two hundred fifteen".