123204442120 has 32 divisors (see below), whose sum is σ = 277545268800. Its totient is φ = 49222172608.

The previous prime is 123204442117. The next prime is 123204442121. The reversal of 123204442120 is 21244402321.

It is not an unprimeable number, because it can be changed into a prime (123204442121) 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 7 ways as a sum of consecutive naturals, for example, 1829140 + ... + 1895299.

It is an arithmetic number, because the mean of its divisors is an integer number (8673289650).

Almost surely, 2^123204442120 is an apocalyptic number.

123204442120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123204442120 is an abundant number, since it is smaller than the sum of its proper divisors (154340826680).

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

123204442120 is a wasteful number, since it uses less digits than its factorization.

123204442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3725277 (or 3725273 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 123204442120 its reverse (21244402321), we get a palindrome (144448844441).

The spelling of 123204442120 in words is "one hundred twenty-three billion, two hundred four million, four hundred forty-two thousand, one hundred twenty".