104540429921 has 2 divisors, whose sum is σ = 104540429922. Its totient is φ = 104540429920.

The previous prime is 104540429893. The next prime is 104540430011. The reversal of 104540429921 is 129924045401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79361087521 + 25179342400 = 281711^2 + 158680^2 .

It is an emirp because it is prime and its reverse (129924045401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104540429921 is a prime.

It is not a weakly prime, because it can be changed into another prime (104540423921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52270214960 + 52270214961.

It is an arithmetic number, because the mean of its divisors is an integer number (52270214961).

Almost surely, 2^104540429921 is an apocalyptic number.

It is an amenable number.

104540429921 is a deficient number, since it is larger than the sum of its proper divisors (1).

104540429921 is an equidigital number, since it uses as much as digits as its factorization.

104540429921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 104540429921 in words is "one hundred four billion, five hundred forty million, four hundred twenty-nine thousand, nine hundred twenty-one".