123716112020 has 24 divisors (see below), whose sum is σ = 259856454984. Its totient is φ = 49476422016.

The previous prime is 123716112019. The next prime is 123716112031. The reversal of 123716112020 is 20211617321.

It can be written as a sum of positive squares in 4 ways, for example, as 56545986436 + 67170125584 = 237794^2 + 259172^2 .

It is a congruent number.

It is an unprimeable number.

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, 524807 + ... + 723086.

It is an arithmetic number, because the mean of its divisors is an integer number (10827352291).

Almost surely, 2^123716112020 is an apocalyptic number.

123716112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123716112020 is an abundant number, since it is smaller than the sum of its proper divisors (136140342964).

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

123716112020 is a wasteful number, since it uses less digits than its factorization.

123716112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252859 (or 1252857 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 123716112020 its reverse (20211617321), we get a palindrome (143927729341).

The spelling of 123716112020 in words is "one hundred twenty-three billion, seven hundred sixteen million, one hundred twelve thousand, twenty".