120104123243 has 4 divisors (see below), whose sum is σ = 129342901968. Its totient is φ = 110865344520.

The previous prime is 120104123221. The next prime is 120104123273. The reversal of 120104123243 is 342321401021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120104123243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120104123273) 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, 4619389343 + ... + 4619389368.

It is an arithmetic number, because the mean of its divisors is an integer number (32335725492).

Almost surely, 2^120104123243 is an apocalyptic number.

120104123243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120104123243 is a deficient number, since it is larger than the sum of its proper divisors (9238778725).

120104123243 is an equidigital number, since it uses as much as digits as its factorization.

120104123243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238778724.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 120104123243 its reverse (342321401021), we get a palindrome (462425524264).

The spelling of 120104123243 in words is "one hundred twenty billion, one hundred four million, one hundred twenty-three thousand, two hundred forty-three".