104442421 has 2 divisors, whose sum is σ = 104442422. Its totient is φ = 104442420.

The previous prime is 104442409. The next prime is 104442433. The reversal of 104442421 is 124244401.

It is a balanced prime because it is at equal distance from previous prime (104442409) and next prime (104442433).

It can be written as a sum of positive squares in only one way, i.e., 94361796 + 10080625 = 9714^2 + 3175^2 .

It is a cyclic number.

It is not a de Polignac number, because 104442421 - 2⁵ = 104442389 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 104442392 and 104442401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104442451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52221210 + 52221211.

It is an arithmetic number, because the mean of its divisors is an integer number (52221211).

Almost surely, 2^104442421 is an apocalyptic number.

It is an amenable number.

104442421 is a deficient number, since it is larger than the sum of its proper divisors (1).

104442421 is an equidigital number, since it uses as much as digits as its factorization.

104442421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 104442421 is about 10219.7074811366. The cubic root of 104442421 is about 470.9328402280.

Adding to 104442421 its reverse (124244401), we get a palindrome (228686822).

The spelling of 104442421 in words is "one hundred four million, four hundred forty-two thousand, four hundred twenty-one".