4240805 has 8 divisors (see below), whose sum is σ = 5103000. Its totient is φ = 3383296.

The previous prime is 4240801. The next prime is 4240807. The reversal of 4240805 is 5080424.

It can be written as a sum of positive squares in 4 ways, for example, as 550564 + 3690241 = 742^2 + 1921^2 .

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 4240805 - 2² = 4240801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240801) 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, 1301 + ... + 3189.

It is an arithmetic number, because the mean of its divisors is an integer number (637875).

Almost surely, 2^4240805 is an apocalyptic number.

It is an amenable number.

4240805 is a deficient number, since it is larger than the sum of its proper divisors (862195).

4240805 is a wasteful number, since it uses less digits than its factorization.

4240805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 4240805 is about 2059.3214902001. The cubic root of 4240805 is about 161.8636891268.

The spelling of 4240805 in words is "four million, two hundred forty thousand, eight hundred five".