123230020 has 12 divisors (see below), whose sum is σ = 258783084. Its totient is φ = 49292000.

The previous prime is 123230011. The next prime is 123230027. The reversal of 123230020 is 20032321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 64738116 + 58491904 = 8046^2 + 7648^2 .

It is not an unprimeable number, because it can be changed into a prime (123230027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3080731 + ... + 3080770.

It is an arithmetic number, because the mean of its divisors is an integer number (21565257).

Almost surely, 2^123230020 is an apocalyptic number.

123230020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123230020 is an abundant number, since it is smaller than the sum of its proper divisors (135553064).

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

123230020 is a wasteful number, since it uses less digits than its factorization.

123230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161510 (or 6161508 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 123230020 is about 11100.9017651721. The cubic root of 123230020 is about 497.6287992571.

Adding to 123230020 its reverse (20032321), we get a palindrome (143262341).

The spelling of 123230020 in words is "one hundred twenty-three million, two hundred thirty thousand, twenty".