2004420021 has 8 divisors (see below), whose sum is σ = 2672767104. Its totient is φ = 1336176480.

The previous prime is 2004420001. The next prime is 2004420073. The reversal of 2004420021 is 1200244002.

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

It is not a de Polignac number, because 2004420021 - 2¹¹ = 2004417973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004420001) 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, 59961 + ... + 87201.

It is an arithmetic number, because the mean of its divisors is an integer number (334095888).

Almost surely, 2^2004420021 is an apocalyptic number.

It is an amenable number.

2004420021 is a deficient number, since it is larger than the sum of its proper divisors (668347083).

2004420021 is a wasteful number, since it uses less digits than its factorization.

2004420021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51771.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2004420021 is about 44770.7496140058. The cubic root of 2004420021 is about 1260.8485132453.

Adding to 2004420021 its reverse (1200244002), we get a palindrome (3204664023).

The spelling of 2004420021 in words is "two billion, four million, four hundred twenty thousand, twenty-one".