123102030204 has 96 divisors (see below), whose sum is σ = 326084505600. Its totient is φ = 40143625920.

The previous prime is 123102030203. The next prime is 123102030211. The reversal of 123102030204 is 402030201321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123102030203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17605149 + ... + 17612139.

It is an arithmetic number, because the mean of its divisors is an integer number (3396713600).

Almost surely, 2^123102030204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123102030204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163042252800).

123102030204 is an abundant number, since it is smaller than the sum of its proper divisors (202982475396).

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

123102030204 is a wasteful number, since it uses less digits than its factorization.

123102030204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10520 (or 10512 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 123102030204 its reverse (402030201321), we get a palindrome (525132231525).

The spelling of 123102030204 in words is "one hundred twenty-three billion, one hundred two million, thirty thousand, two hundred four".