104240735281 has 4 divisors (see below), whose sum is σ = 104242563364. Its totient is φ = 104238907200.

The previous prime is 104240735239. The next prime is 104240735299. The reversal of 104240735281 is 182537042401.

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 23913838881 + 80326896400 = 154641^2 + 283420^2 .

It is a cyclic number.

It is not a de Polignac number, because 104240735281 - 2⁹ = 104240734769 is a prime.

It is a super-2 number, since 2×104240735281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104240735281.

It is not an unprimeable number, because it can be changed into a prime (104240735381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825660 + ... + 943501.

It is an arithmetic number, because the mean of its divisors is an integer number (26060640841).

Almost surely, 2^104240735281 is an apocalyptic number.

It is an amenable number.

104240735281 is a deficient number, since it is larger than the sum of its proper divisors (1828083).

104240735281 is an equidigital number, since it uses as much as digits as its factorization.

104240735281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828082.

The product of its (nonzero) digits is 53760, while the sum is 37.

Adding to 104240735281 its reverse (182537042401), we get a palindrome (286777777682).

The spelling of 104240735281 in words is "one hundred four billion, two hundred forty million, seven hundred thirty-five thousand, two hundred eighty-one".