123003120500 has 96 divisors (see below), whose sum is σ = 290604088320. Its totient is φ = 45212342400.

The previous prime is 123003120491. The next prime is 123003120563. The reversal of 123003120500 is 5021300321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1407071 + ... + 1491929.

It is an arithmetic number, because the mean of its divisors is an integer number (3027125920).

Almost surely, 2^123003120500 is an apocalyptic number.

123003120500 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 123003120500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145302044160).

123003120500 is an abundant number, since it is smaller than the sum of its proper divisors (167600967820).

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

123003120500 is a wasteful number, since it uses less digits than its factorization.

123003120500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85114 (or 85102 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 123003120500 its reverse (5021300321), we get a palindrome (128024420821).

The spelling of 123003120500 in words is "one hundred twenty-three billion, three million, one hundred twenty thousand, five hundred".