123120107 has 4 divisors (see below), whose sum is σ = 134312856. Its totient is φ = 111927360.

The previous prime is 123120091. The next prime is 123120131. The reversal of 123120107 is 701021321.

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

It is a cyclic number.

It is not a de Polignac number, because 123120107 - 2⁴ = 123120091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123123107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5596358 + ... + 5596379.

It is an arithmetic number, because the mean of its divisors is an integer number (33578214).

Almost surely, 2^123120107 is an apocalyptic number.

123120107 is a deficient number, since it is larger than the sum of its proper divisors (11192749).

123120107 is a wasteful number, since it uses less digits than its factorization.

123120107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192748.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 123120107 is about 11095.9500269242. The cubic root of 123120107 is about 497.4808046262.

Adding to 123120107 its reverse (701021321), we get a palindrome (824141428).

The spelling of 123120107 in words is "one hundred twenty-three million, one hundred twenty thousand, one hundred seven".