104330021 has 4 divisors (see below), whose sum is σ = 105091692. Its totient is φ = 103568352.

The previous prime is 104330011. The next prime is 104330033. The reversal of 104330021 is 120033401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61936900 + 42393121 = 7870^2 + 6511^2 .

It is a cyclic number.

It is not a de Polignac number, because 104330021 - 2⁶ = 104329957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104329978 and 104330005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104330011) 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, 380630 + ... + 380903.

It is an arithmetic number, because the mean of its divisors is an integer number (26272923).

Almost surely, 2^104330021 is an apocalyptic number.

It is an amenable number.

104330021 is a deficient number, since it is larger than the sum of its proper divisors (761671).

104330021 is an equidigital number, since it uses as much as digits as its factorization.

104330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761670.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 104330021 is about 10214.2068218732. The cubic root of 104330021 is about 470.7638416841.

Adding to 104330021 its reverse (120033401), we get a palindrome (224363422).

The spelling of 104330021 in words is "one hundred four million, three hundred thirty thousand, twenty-one".