104520321 has 24 divisors (see below), whose sum is σ = 160403360. Its totient is φ = 67262832.

The previous prime is 104520319. The next prime is 104520341. The reversal of 104520321 is 123025401.

It is not a de Polignac number, because 104520321 - 2¹ = 104520319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104520294 and 104520303.

It is not an unprimeable number, because it can be changed into a prime (104520341) 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 23 ways as a sum of consecutive naturals, for example, 20406 + ... + 25008.

Almost surely, 2^104520321 is an apocalyptic number.

It is an amenable number.

104520321 is a deficient number, since it is larger than the sum of its proper divisors (55883039).

104520321 is an equidigital number, since it uses as much as digits as its factorization.

104520321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670 (or 4635 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 104520321 is about 10223.5180344146. The cubic root of 104520321 is about 471.0498953186.

Adding to 104520321 its reverse (123025401), we get a palindrome (227545722).

The spelling of 104520321 in words is "one hundred four million, five hundred twenty thousand, three hundred twenty-one".