2004120643 has 16 divisors (see below), whose sum is σ = 2367993856. Its totient is φ = 1659813120.

The previous prime is 2004120583. The next prime is 2004120647. The reversal of 2004120643 is 3460214002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2004120643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2004120647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139180 + ... + 152902.

It is an arithmetic number, because the mean of its divisors is an integer number (147999616).

Almost surely, 2^2004120643 is an apocalyptic number.

2004120643 is a deficient number, since it is larger than the sum of its proper divisors (363873213).

2004120643 is a wasteful number, since it uses less digits than its factorization.

2004120643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14434.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2004120643 is about 44767.4060338546. The cubic root of 2004120643 is about 1260.7857371311.

Adding to 2004120643 its reverse (3460214002), we get a palindrome (5464334645).

The spelling of 2004120643 in words is "two billion, four million, one hundred twenty thousand, six hundred forty-three".