104130021 has 8 divisors (see below), whose sum is σ = 138908704. Its totient is φ = 69385680.

The previous prime is 104130017. The next prime is 104130029. The reversal of 104130021 is 120031401.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 104130021 - 2² = 104130017 is a prime.

It is a super-2 number, since 2×104130021² = 21686122546920882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104129979 and 104130006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104130029) 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, 391 + ... + 14436.

It is an arithmetic number, because the mean of its divisors is an integer number (17363588).

Almost surely, 2^104130021 is an apocalyptic number.

It is an amenable number.

104130021 is a deficient number, since it is larger than the sum of its proper divisors (34778683).

104130021 is a wasteful number, since it uses less digits than its factorization.

104130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17171.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 104130021 is about 10204.4118399837. The cubic root of 104130021 is about 470.4628321408.

Adding to 104130021 its reverse (120031401), we get a palindrome (224161422).

The spelling of 104130021 in words is "one hundred four million, one hundred thirty thousand, twenty-one".