123321606 has 32 divisors (see below), whose sum is σ = 250591968. Its totient is φ = 40454400.

The previous prime is 123321557. The next prime is 123321631. The reversal of 123321606 is 606123321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118866 + ... + 119898.

It is an arithmetic number, because the mean of its divisors is an integer number (7830999).

Almost surely, 2^123321606 is an apocalyptic number.

123321606 is an abundant number, since it is smaller than the sum of its proper divisors (127270362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123321606 is a wasteful number, since it uses less digits than its factorization.

123321606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 123321606 is about 11105.0261593569. The cubic root of 123321606 is about 497.7520499202.

Adding to 123321606 its reverse (606123321), we get a palindrome (729444927).

The spelling of 123321606 in words is "one hundred twenty-three million, three hundred twenty-one thousand, six hundred six".