4243665 has 8 divisors (see below), whose sum is σ = 6789888. Its totient is φ = 2263280.

The previous prime is 4243649. The next prime is 4243667. The reversal of 4243665 is 5663424.

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

It is not a de Polignac number, because 4243665 - 2⁴ = 4243649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4243667) 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 7 ways as a sum of consecutive naturals, for example, 141441 + ... + 141470.

It is an arithmetic number, because the mean of its divisors is an integer number (848736).

Almost surely, 2^4243665 is an apocalyptic number.

It is an amenable number.

4243665 is a deficient number, since it is larger than the sum of its proper divisors (2546223).

4243665 is a wasteful number, since it uses less digits than its factorization.

4243665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282919.

The product of its digits is 17280, while the sum is 30.

The square root of 4243665 is about 2060.0157766386. The cubic root of 4243665 is about 161.9000679215.

The spelling of 4243665 in words is "four million, two hundred forty-three thousand, six hundred sixty-five".