123122105 has 12 divisors (see below), whose sum is σ = 154452900. Its totient is φ = 94213152.

The previous prime is 123122099. The next prime is 123122119. The reversal of 123122105 is 501221321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 89794576 + 33327529 = 9476^2 + 5773^2 .

It is not a de Polignac number, because 123122105 - 2⁴ = 123122089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20630 + ... + 25919.

It is an arithmetic number, because the mean of its divisors is an integer number (12871075).

Almost surely, 2^123122105 is an apocalyptic number.

It is an amenable number.

123122105 is a deficient number, since it is larger than the sum of its proper divisors (31330795).

123122105 is an equidigital number, since it uses as much as digits as its factorization.

123122105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46600 (or 46577 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 123122105 is about 11096.0400594086. The cubic root of 123122105 is about 497.4834956605.

Adding to 123122105 its reverse (501221321), we get a palindrome (624343426).

The spelling of 123122105 in words is "one hundred twenty-three million, one hundred twenty-two thousand, one hundred five".