104121621 has 12 divisors (see below), whose sum is σ = 156937248. Its totient is φ = 66396264.

The previous prime is 104121569. The next prime is 104121623. The reversal of 104121621 is 126121401.

104121621 is a `hidden beast` number, since 1 + 0 + 41 + 2 + 1 + 621 = 666.

It is not a de Polignac number, because 104121621 - 2⁶ = 104121557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104121594 and 104121603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104121623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251295 + ... + 251708.

It is an arithmetic number, because the mean of its divisors is an integer number (13078104).

Almost surely, 2^104121621 is an apocalyptic number.

It is an amenable number.

104121621 is a deficient number, since it is larger than the sum of its proper divisors (52815627).

104121621 is a wasteful number, since it uses less digits than its factorization.

104121621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503032 (or 503029 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 104121621 is about 10204.0002450020. Note that the first 3 decimals coincide. The cubic root of 104121621 is about 470.4501813092.

The spelling of 104121621 in words is "one hundred four million, one hundred twenty-one thousand, six hundred twenty-one".