2404424021 has 8 divisors (see below), whose sum is σ = 2476043064. Its totient is φ = 2333154240.

The previous prime is 2404423993. The next prime is 2404424039. The reversal of 2404424021 is 1204244042.

It can be written as a sum of positive squares in 4 ways, for example, as 231465796 + 2172958225 = 15214^2 + 46615^2 .

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 2404424021 - 2¹⁰ = 2404422997 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 (2404424221) 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, 73310 + ... + 100911.

It is an arithmetic number, because the mean of its divisors is an integer number (309505383).

Almost surely, 2^2404424021 is an apocalyptic number.

It is an amenable number.

2404424021 is a deficient number, since it is larger than the sum of its proper divisors (71619043).

2404424021 is a wasteful number, since it uses less digits than its factorization.

2404424021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174631.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2404424021 is about 49034.9265422107. The cubic root of 2404424021 is about 1339.6880578177.

Adding to 2404424021 its reverse (1204244042), we get a palindrome (3608668063).

The spelling of 2404424021 in words is "two billion, four hundred four million, four hundred twenty-four thousand, twenty-one".