123866216 has 16 divisors (see below), whose sum is σ = 245911140. Its totient is φ = 58289920.

The previous prime is 123866203. The next prime is 123866219. The reversal of 123866216 is 612668321.

It can be written as a sum of positive squares in 2 ways, for example, as 100922116 + 22944100 = 10046^2 + 4790^2 .

It is not an unprimeable number, because it can be changed into a prime (123866219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455255 + ... + 455526.

Almost surely, 2^123866216 is an apocalyptic number.

It is an amenable number.

123866216 is a deficient number, since it is larger than the sum of its proper divisors (122044924).

123866216 is a wasteful number, since it uses less digits than its factorization.

123866216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910804 (or 910800 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 123866216 is about 11129.5200255896. The cubic root of 123866216 is about 498.4836942823.

The spelling of 123866216 in words is "one hundred twenty-three million, eight hundred sixty-six thousand, two hundred sixteen".