4243785 has 32 divisors (see below), whose sum is σ = 8359680. Its totient is φ = 1790208.

The previous prime is 4243781. The next prime is 4243793. The reversal of 4243785 is 5873424.

It is not a de Polignac number, because 4243785 - 2² = 4243781 is a prime.

It is a super-2 number, since 2×4243785² = 36019422252450, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4⁷ + 2⁵ + 4¹¹ + 3⁵ + 7² + 8⁵ + 5 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4243781) 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 31 ways as a sum of consecutive naturals, for example, 190 + ... + 2919.

It is an arithmetic number, because the mean of its divisors is an integer number (261240).

Almost surely, 2^4243785 is an apocalyptic number.

It is an amenable number.

4243785 is a deficient number, since it is larger than the sum of its proper divisors (4115895).

4243785 is a wasteful number, since it uses less digits than its factorization.

4243785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137.

The product of its digits is 26880, while the sum is 33.

The square root of 4243785 is about 2060.0449024232. The cubic root of 4243785 is about 161.9015939472.

The spelling of 4243785 in words is "four million, two hundred forty-three thousand, seven hundred eighty-five".