5104040021 has 4 divisors (see below), whose sum is σ = 5228528844. Its totient is φ = 4979551200.

The previous prime is 5104040017. The next prime is 5104040047. The reversal of 5104040021 is 1200404015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1200404015 = 5 ⋅240080803.

It can be written as a sum of positive squares in 2 ways, for example, as 3007315921 + 2096724100 = 54839^2 + 45790^2 .

It is a cyclic number.

It is not a de Polignac number, because 5104040021 - 2² = 5104040017 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 (5104040321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62244350 + ... + 62244431.

It is an arithmetic number, because the mean of its divisors is an integer number (1307132211).

Almost surely, 2^5104040021 is an apocalyptic number.

It is an amenable number.

5104040021 is a deficient number, since it is larger than the sum of its proper divisors (124488823).

5104040021 is a wasteful number, since it uses less digits than its factorization.

5104040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124488822.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 5104040021 is about 71442.5644906452. The cubic root of 5104040021 is about 1721.7550164917.

Adding to 5104040021 its reverse (1200404015), we get a palindrome (6304444036).

The spelling of 5104040021 in words is "five billion, one hundred four million, forty thousand, twenty-one".