123045218 has 12 divisors (see below), whose sum is σ = 196064322. Its totient is φ = 57903360.

The previous prime is 123045217. The next prime is 123045227. The reversal of 123045218 is 812540321.

It can be written as a sum of positive squares in 3 ways, for example, as 120934009 + 2111209 = 10997^2 + 1453^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123045211) 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 5 ways as a sum of consecutive naturals, for example, 105863 + ... + 107018.

Almost surely, 2^123045218 is an apocalyptic number.

123045218 is a deficient number, since it is larger than the sum of its proper divisors (73019104).

123045218 is a wasteful number, since it uses less digits than its factorization.

123045218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212917 (or 212900 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 123045218 is about 11092.5749039617. The cubic root of 123045218 is about 497.3799183259.

Adding to 123045218 its reverse (812540321), we get a palindrome (935585539).

The spelling of 123045218 in words is "one hundred twenty-three million, forty-five thousand, two hundred eighteen".