104240121157 has 2 divisors, whose sum is σ = 104240121158. Its totient is φ = 104240121156.

The previous prime is 104240121151. The next prime is 104240121247. The reversal of 104240121157 is 751121042401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93979646721 + 10260474436 = 306561^2 + 101294^2 .

It is an emirp because it is prime and its reverse (751121042401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104240121157 - 2¹⁹ = 104239596869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104240121151) 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, 52120060578 + 52120060579.

It is an arithmetic number, because the mean of its divisors is an integer number (52120060579).

Almost surely, 2^104240121157 is an apocalyptic number.

It is an amenable number.

104240121157 is a deficient number, since it is larger than the sum of its proper divisors (1).

104240121157 is an equidigital number, since it uses as much as digits as its factorization.

104240121157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 28.

Adding to 104240121157 its reverse (751121042401), we get a palindrome (855361163558).

The spelling of 104240121157 in words is "one hundred four billion, two hundred forty million, one hundred twenty-one thousand, one hundred fifty-seven".