123030605000 has 120 divisors (see below), whose sum is σ = 304235293230. Its totient is φ = 46621440000.

The previous prime is 123030604909. The next prime is 123030605059. The reversal of 123030605000 is 506030321.

It can be written as a sum of positive squares in 5 ways, for example, as 9753932644 + 113276672356 = 98762^2 + 336566^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1770920 + ... + 1839080.

Almost surely, 2^123030605000 is an apocalyptic number.

123030605000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123030605000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152117646615).

123030605000 is an abundant number, since it is smaller than the sum of its proper divisors (181204688230).

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

123030605000 is an equidigital number, since it uses as much as digits as its factorization.

123030605000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68225 (or 68187 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 123030605000 its reverse (506030321), we get a palindrome (123536635321).

The spelling of 123030605000 in words is "one hundred twenty-three billion, thirty million, six hundred five thousand".