123104210020 has 96 divisors (see below), whose sum is σ = 283530627072. Its totient is φ = 44526000000.

The previous prime is 123104209967. The next prime is 123104210027. The reversal of 123104210020 is 20012401321.

It is a junction number, because it is equal to n+sod(n) for n = 123104209976 and 123104210003.

It is not an unprimeable number, because it can be changed into a prime (123104210027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67974915 + ... + 67976725.

It is an arithmetic number, because the mean of its divisors is an integer number (2953444032).

Almost surely, 2^123104210020 is an apocalyptic number.

123104210020 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 123104210020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141765313536).

123104210020 is an abundant number, since it is smaller than the sum of its proper divisors (160426417052).

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

123104210020 is a wasteful number, since it uses less digits than its factorization.

123104210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313 (or 3311 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 123104210020 its reverse (20012401321), we get a palindrome (143116611341).

The spelling of 123104210020 in words is "one hundred twenty-three billion, one hundred four million, two hundred ten thousand, twenty".