2004240421 has 8 divisors (see below), whose sum is σ = 2047326840. Its totient is φ = 1961349312.

The previous prime is 2004240409. The next prime is 2004240439. The reversal of 2004240421 is 1240424002.

It can be written as a sum of positive squares in 4 ways, for example, as 198415396 + 1805825025 = 14086^2 + 42495^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2004240421 - 2²⁹ = 1467369509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004240451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27990 + ... + 69223.

It is an arithmetic number, because the mean of its divisors is an integer number (255915855).

Almost surely, 2^2004240421 is an apocalyptic number.

It is an amenable number.

2004240421 is a deficient number, since it is larger than the sum of its proper divisors (43086419).

2004240421 is an equidigital number, since it uses as much as digits as its factorization.

2004240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97655.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2004240421 is about 44768.7437951971. The cubic root of 2004240421 is about 1260.8108539466.

Adding to 2004240421 its reverse (1240424002), we get a palindrome (3244664423).

The spelling of 2004240421 in words is "two billion, four million, two hundred forty thousand, four hundred twenty-one".