104143121 has 2 divisors, whose sum is σ = 104143122. Its totient is φ = 104143120.

The previous prime is 104143111. The next prime is 104143133. The reversal of 104143121 is 121341401.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85747600 + 18395521 = 9260^2 + 4289^2 .

It is an emirp because it is prime and its reverse (121341401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104143121 - 2¹⁸ = 103880977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104143121.

It is not a weakly prime, because it can be changed into another prime (104143111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52071560 + 52071561.

It is an arithmetic number, because the mean of its divisors is an integer number (52071561).

Almost surely, 2^104143121 is an apocalyptic number.

It is an amenable number.

104143121 is a deficient number, since it is larger than the sum of its proper divisors (1).

104143121 is an equidigital number, since it uses as much as digits as its factorization.

104143121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 104143121 is about 10205.0536990258. The cubic root of 104143121 is about 470.4825600560.

Adding to 104143121 its reverse (121341401), we get a palindrome (225484522).

The spelling of 104143121 in words is "one hundred four million, one hundred forty-three thousand, one hundred twenty-one".