104321421 has 6 divisors (see below), whose sum is σ = 150686510. Its totient is φ = 69547608.

The previous prime is 104321411. The next prime is 104321423. The reversal of 104321421 is 124123401.

It can be written as a sum of positive squares in only one way, i.e., 95765796 + 8555625 = 9786^2 + 2925^2 .

It is not a de Polignac number, because 104321421 - 2¹⁰ = 104320397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104321394 and 104321403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104321423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5795626 + ... + 5795643.

Almost surely, 2^104321421 is an apocalyptic number.

It is an amenable number.

104321421 is a deficient number, since it is larger than the sum of its proper divisors (46365089).

104321421 is a wasteful number, since it uses less digits than its factorization.

104321421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11591275 (or 11591272 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 104321421 is about 10213.7858309248. The cubic root of 104321421 is about 470.7509061926.

Adding to 104321421 its reverse (124123401), we get a palindrome (228444822).

The spelling of 104321421 in words is "one hundred four million, three hundred twenty-one thousand, four hundred twenty-one".