104423421 has 4 divisors (see below), whose sum is σ = 139231232. Its totient is φ = 69615612.

The previous prime is 104423419. The next prime is 104423441. The reversal of 104423421 is 124324401.

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 not a de Polignac number, because 104423421 - 2¹ = 104423419 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 (104423441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17403901 + ... + 17403906.

It is an arithmetic number, because the mean of its divisors is an integer number (34807808).

Almost surely, 2^104423421 is an apocalyptic number.

It is an amenable number.

104423421 is a deficient number, since it is larger than the sum of its proper divisors (34807811).

104423421 is an equidigital number, since it uses as much as digits as its factorization.

104423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34807810.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 104423421 is about 10218.7778623473. Note that the first 3 decimals coincide. The cubic root of 104423421 is about 470.9042813770.

Adding to 104423421 its reverse (124324401), we get a palindrome (228747822).

The spelling of 104423421 in words is "one hundred four million, four hundred twenty-three thousand, four hundred twenty-one".