104320021 has 8 divisors (see below), whose sum is σ = 114957920. Its totient is φ = 94055472.

The previous prime is 104320001. The next prime is 104320033. The reversal of 104320021 is 120023401.

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 104320021 - 2¹⁷ = 104188949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 104319983 and 104320010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104320001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92751 + ... + 93868.

It is an arithmetic number, because the mean of its divisors is an integer number (14369740).

Almost surely, 2^104320021 is an apocalyptic number.

It is an amenable number.

104320021 is a deficient number, since it is larger than the sum of its proper divisors (10637899).

104320021 is a wasteful number, since it uses less digits than its factorization.

104320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186675.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 104320021 is about 10213.7172958723. The cubic root of 104320021 is about 470.7488003476.

Adding to 104320021 its reverse (120023401), we get a palindrome (224343422).

The spelling of 104320021 in words is "one hundred four million, three hundred twenty thousand, twenty-one".