104204621 has 2 divisors, whose sum is σ = 104204622. Its totient is φ = 104204620.

The previous prime is 104204603. The next prime is 104204623. The reversal of 104204621 is 126402401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89680900 + 14523721 = 9470^2 + 3811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104204621 is a prime.

Together with 104204623, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 104204593 and 104204602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104204623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52102310 + 52102311.

It is an arithmetic number, because the mean of its divisors is an integer number (52102311).

Almost surely, 2^104204621 is an apocalyptic number.

It is an amenable number.

104204621 is a deficient number, since it is larger than the sum of its proper divisors (1).

104204621 is an equidigital number, since it uses as much as digits as its factorization.

104204621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 104204621 is about 10208.0664672601. The cubic root of 104204621 is about 470.5751537335.

The spelling of 104204621 in words is "one hundred four million, two hundred four thousand, six hundred twenty-one".