104742240508385 has 4 divisors (see below), whose sum is σ = 125690688610068. Its totient is φ = 83793792406704.

The previous prime is 104742240508363. The next prime is 104742240508387. The reversal of 104742240508385 is 583805042247401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37649906946304 + 67092333562081 = 6135952^2 + 8190991^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104742240508385 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104742240508387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10474224050834 + ... + 10474224050843.

It is an arithmetic number, because the mean of its divisors is an integer number (31422672152517).

Almost surely, 2^{104742240508385} is an apocalyptic number.

It is an amenable number.

104742240508385 is a deficient number, since it is larger than the sum of its proper divisors (20948448101683).

104742240508385 is an equidigital number, since it uses as much as digits as its factorization.

104742240508385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20948448101682.

The product of its (nonzero) digits is 8601600, while the sum is 53.

The spelling of 104742240508385 in words is "one hundred four trillion, seven hundred forty-two billion, two hundred forty million, five hundred eight thousand, three hundred eighty-five".