2004403121 has 32 divisors (see below), whose sum is σ = 2461536000. Its totient is φ = 1595704320.

The previous prime is 2004403117. The next prime is 2004403171. The reversal of 2004403121 is 1213044002.

It is not a de Polignac number, because 2004403121 - 2² = 2004403117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2004403121.

It is not an unprimeable number, because it can be changed into a prime (2004403171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 605930 + ... + 609228.

It is an arithmetic number, because the mean of its divisors is an integer number (76923000).

Almost surely, 2^2004403121 is an apocalyptic number.

It is an amenable number.

2004403121 is a deficient number, since it is larger than the sum of its proper divisors (457132879).

2004403121 is a wasteful number, since it uses less digits than its factorization.

2004403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2004403121 is about 44770.5608743067. The cubic root of 2004403121 is about 1260.8449696766.

Adding to 2004403121 its reverse (1213044002), we get a palindrome (3217447123).

The spelling of 2004403121 in words is "two billion, four million, four hundred three thousand, one hundred twenty-one".