4042064 has 20 divisors (see below), whose sum is σ = 8434356. Its totient is φ = 1865472.

The previous prime is 4042063. The next prime is 4042069. The reversal of 4042064 is 4602404.

It can be written as a sum of positive squares in 2 ways, for example, as 462400 + 3579664 = 680^2 + 1892^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9509 + ... + 9924.

Almost surely, 2^4042064 is an apocalyptic number.

It is an amenable number.

4042064 is an abundant number, since it is smaller than the sum of its proper divisors (4392292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4042064 is a wasteful number, since it uses less digits than its factorization.

4042064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19454 (or 19448 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4042064 is about 2010.4884978532. The cubic root of 4042064 is about 159.2946029978.

Adding to 4042064 its reverse (4602404), we get a palindrome (8644468).

The spelling of 4042064 in words is "four million, forty-two thousand, sixty-four", and thus it is an eban number.