123030206 has 32 divisors (see below), whose sum is σ = 210201600. Its totient is φ = 53537760.

The previous prime is 123030203. The next prime is 123030223. The reversal of 123030206 is 602030321.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133415 + ... + 134333.

It is an arithmetic number, because the mean of its divisors is an integer number (6568800).

Almost surely, 2^123030206 is an apocalyptic number.

123030206 is a deficient number, since it is larger than the sum of its proper divisors (87171394).

123030206 is a wasteful number, since it uses less digits than its factorization.

123030206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123030206 is about 11091.8982144627. The cubic root of 123030206 is about 497.3596900686.

Adding to 123030206 its reverse (602030321), we get a palindrome (725060527).

The spelling of 123030206 in words is "one hundred twenty-three million, thirty thousand, two hundred six".