2004145 has 16 divisors (see below), whose sum is σ = 2826432. Its totient is φ = 1344960.

The previous prime is 2004137. The next prime is 2004209. The reversal of 2004145 is 5414002.

It is not a de Polignac number, because 2004145 - 2³ = 2004137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687 + ... + 2116.

It is an arithmetic number, because the mean of its divisors is an integer number (176652).

2^2004145 is an apocalyptic number.

It is an amenable number.

2004145 is a deficient number, since it is larger than the sum of its proper divisors (822287).

2004145 is a wasteful number, since it uses less digits than its factorization.

2004145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2004145 is about 1415.6782826617. The cubic root of 2004145 is about 126.0790844747.

Adding to 2004145 its reverse (5414002), we get a palindrome (7418147).

The spelling of 2004145 in words is "two million, four thousand, one hundred forty-five".