10004100421 has 4 divisors (see below), whose sum is σ = 11433257632. Its totient is φ = 8574943212.

The previous prime is 10004100397. The next prime is 10004100439. The reversal of 10004100421 is 12400140001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10004100421 - 2¹¹ = 10004098373 is a prime.

It is the 100021-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10004100481) by changing a digit.

It is a nontrivial repunit in base 100020.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714578595 + ... + 714578608.

It is an arithmetic number, because the mean of its divisors is an integer number (2858314408).

Almost surely, 2^10004100421 is an apocalyptic number.

It is an amenable number.

10004100421 is a deficient number, since it is larger than the sum of its proper divisors (1429157211).

10004100421 is an equidigital number, since it uses as much as digits as its factorization.

10004100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429157210.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10004100421 its reverse (12400140001), we get a palindrome (22404240422).

The spelling of 10004100421 in words is "ten billion, four million, one hundred thousand, four hundred twenty-one".