4042385 has 16 divisors (see below), whose sum is σ = 5028480. Its totient is φ = 3118080.

The previous prime is 4042343. The next prime is 4042391. The reversal of 4042385 is 5832404.

It is not a de Polignac number, because 4042385 - 2¹⁰ = 4041361 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20849 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (314280).

Almost surely, 2^4042385 is an apocalyptic number.

It is an amenable number.

4042385 is a deficient number, since it is larger than the sum of its proper divisors (986095).

4042385 is a wasteful number, since it uses less digits than its factorization.

4042385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 4042385 is about 2010.5683276129. The cubic root of 4042385 is about 159.2988196730.

Adding to 4042385 its reverse (5832404), we get a palindrome (9874789).

The spelling of 4042385 in words is "four million, forty-two thousand, three hundred eighty-five".