123030646 has 12 divisors (see below), whose sum is σ = 187197156. Its totient is φ = 60643940.

The previous prime is 123030619. The next prime is 123030653. The reversal of 123030646 is 646030321.

It is a self number, because there is not a number n which added to its sum of digits gives 123030646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3981 + ... + 16183.

It is an arithmetic number, because the mean of its divisors is an integer number (15599763).

Almost surely, 2^123030646 is an apocalyptic number.

123030646 is a deficient number, since it is larger than the sum of its proper divisors (64166510).

123030646 is an equidigital number, since it uses as much as digits as its factorization.

123030646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12347 (or 12276 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 123030646 is about 11091.9180487416. The cubic root of 123030646 is about 497.3602829799.

Adding to 123030646 its reverse (646030321), we get a palindrome (769060967).

The spelling of 123030646 in words is "one hundred twenty-three million, thirty thousand, six hundred forty-six".