2004542 has 8 divisors (see below), whose sum is σ = 3137616. Its totient is φ = 958672.

The previous prime is 2004539. The next prime is 2004559. The reversal of 2004542 is 2454002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2004542.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 21743 + ... + 21834.

It is an arithmetic number, because the mean of its divisors is an integer number (392202).

2^2004542 is an apocalyptic number.

2004542 is a deficient number, since it is larger than the sum of its proper divisors (1133074).

2004542 is a wasteful number, since it uses less digits than its factorization.

2004542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43602.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 2004542 is about 1415.8184911916. The cubic root of 2004542 is about 126.0874089043.

Adding to 2004542 its reverse (2454002), we get a palindrome (4458544).

The spelling of 2004542 in words is "two million, four thousand, five hundred forty-two".