104205132421 has 8 divisors (see below), whose sum is σ = 112258904184. Its totient is φ = 96156788160.

The previous prime is 104205132379. The next prime is 104205132463. The reversal of 104205132421 is 124231502401.

It is an interprime number because it is at equal distance from previous prime (104205132379) and next prime (104205132463).

It can be written as a sum of positive squares in 4 ways, for example, as 4357980225 + 99847152196 = 66015^2 + 315986^2 .

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 104205132421 - 2¹¹ = 104205130373 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 (104205142421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1316950 + ... + 1393831.

It is an arithmetic number, because the mean of its divisors is an integer number (14032363023).

Almost surely, 2^104205132421 is an apocalyptic number.

It is an amenable number.

104205132421 is a deficient number, since it is larger than the sum of its proper divisors (8053771763).

104205132421 is a wasteful number, since it uses less digits than its factorization.

104205132421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713751.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 104205132421 its reverse (124231502401), we get a palindrome (228436634822).

The spelling of 104205132421 in words is "one hundred four billion, two hundred five million, one hundred thirty-two thousand, four hundred twenty-one".