123043210020 has 72 divisors (see below), whose sum is σ = 373268521080. Its totient is φ = 32808230400.

The previous prime is 123043209967. The next prime is 123043210021. The reversal of 123043210020 is 20012340321.

123043210020 is a `hidden beast` number, since 1 + 230 + 432 + 1 + 0 + 0 + 2 + 0 = 666.

123043210020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38428545024 + 84614664996 = 196032^2 + 290886^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 123043209975 and 123043210002.

It is not an unprimeable number, because it can be changed into a prime (123043210021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2149936 + ... + 2206424.

It is an arithmetic number, because the mean of its divisors is an integer number (5184285015).

Almost surely, 2^123043210020 is an apocalyptic number.

123043210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123043210020 is an abundant number, since it is smaller than the sum of its proper divisors (250225311060).

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

123043210020 is a wasteful number, since it uses less digits than its factorization.

123043210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68605 (or 68600 counting only the distinct ones).

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

Adding to 123043210020 its reverse (20012340321), we get a palindrome (143055550341).

The spelling of 123043210020 in words is "one hundred twenty-three billion, forty-three million, two hundred ten thousand, twenty".