120123617 has 4 divisors (see below), whose sum is σ = 121769220. Its totient is φ = 118478016.

The previous prime is 120123613. The next prime is 120123623. The reversal of 120123617 is 716321021.

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 50751376 + 69372241 = 7124^2 + 8329^2 .

It is a cyclic number.

It is not a de Polignac number, because 120123617 - 2² = 120123613 is a prime.

It is a super-2 number, since 2×120123617² = 28859366722325378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120123592 and 120123601.

It is not an unprimeable number, because it can be changed into a prime (120123611) 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 in 3 ways as a sum of consecutive naturals, for example, 822692 + ... + 822837.

It is an arithmetic number, because the mean of its divisors is an integer number (30442305).

Almost surely, 2^120123617 is an apocalyptic number.

It is an amenable number.

120123617 is a deficient number, since it is larger than the sum of its proper divisors (1645603).

120123617 is an equidigital number, since it uses as much as digits as its factorization.

120123617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645602.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 120123617 is about 10960.0920160371. The cubic root of 120123617 is about 493.4117265955.

Adding to 120123617 its reverse (716321021), we get a palindrome (836444638).

The spelling of 120123617 in words is "one hundred twenty million, one hundred twenty-three thousand, six hundred seventeen".