104340421 has 2 divisors, whose sum is σ = 104340422. Its totient is φ = 104340420.

The previous prime is 104340377. The next prime is 104340437. The reversal of 104340421 is 124043401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100280196 + 4060225 = 10014^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 104340421 - 2⁹ = 104339909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104340461) 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 as a sum of consecutive naturals, namely, 52170210 + 52170211.

It is an arithmetic number, because the mean of its divisors is an integer number (52170211).

Almost surely, 2^104340421 is an apocalyptic number.

It is an amenable number.

104340421 is a deficient number, since it is larger than the sum of its proper divisors (1).

104340421 is an equidigital number, since it uses as much as digits as its factorization.

104340421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 104340421 is about 10214.7159040279. The cubic root of 104340421 is about 470.7794836544.

Adding to 104340421 its reverse (124043401), we get a palindrome (228383822).

The spelling of 104340421 in words is "one hundred four million, three hundred forty thousand, four hundred twenty-one".