2004642 has 16 divisors (see below), whose sum is σ = 4454880. Its totient is φ = 668196.

The previous prime is 2004641. The next prime is 2004647. The reversal of 2004642 is 2464002.

2004642 is a `hidden beast` number, since 20 + 0 + 4 + 642 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2004641) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18508 + ... + 18615.

It is an arithmetic number, because the mean of its divisors is an integer number (278430).

2^2004642 is an apocalyptic number.

2004642 is an abundant number, since it is smaller than the sum of its proper divisors (2450238).

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

2004642 is a wasteful number, since it uses less digits than its factorization.

2004642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37134 (or 37128 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2004642 is about 1415.8538060125. The cubic root of 2004642 is about 126.0895055646.

Adding to 2004642 its reverse (2464002), we get a palindrome (4468644).

The spelling of 2004642 in words is "two million, four thousand, six hundred forty-two".