4005243 has 24 divisors (see below), whose sum is σ = 6589440. Its totient is φ = 2320560.

The previous prime is 4005241. The next prime is 4005271. The reversal of 4005243 is 3425004.

It is a happy number.

It is not a de Polignac number, because 4005243 - 2¹ = 4005241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1398 + ... + 3156.

It is an arithmetic number, because the mean of its divisors is an integer number (274560).

Almost surely, 2^4005243 is an apocalyptic number.

4005243 is a deficient number, since it is larger than the sum of its proper divisors (2584197).

4005243 is a wasteful number, since it uses less digits than its factorization.

4005243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 4005243 is about 2001.3103207649. The cubic root of 4005243 is about 158.8094311136.

The spelling of 4005243 in words is "four million, five thousand, two hundred forty-three".