120731776746420 has 192 divisors, whose sum is σ = 396666192384000. Its totient is φ = 26861436380160.

The previous prime is 120731776746337. The next prime is 120731776746473. The reversal of 120731776746420 is 24647677137021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 425770 + ... + 15544929.

It is an arithmetic number, because the mean of its divisors is an integer number (2065969752000).

Almost surely, 2^{120731776746420} is an apocalyptic number.

120731776746420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120731776746420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198333096192000).

120731776746420 is an abundant number, since it is smaller than the sum of its proper divisors (275934415637580).

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

120731776746420 is a wasteful number, since it uses less digits than its factorization.

120731776746420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15971198 (or 15971196 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 57.

The spelling of 120731776746420 in words is "one hundred twenty trillion, seven hundred thirty-one billion, seven hundred seventy-six million, seven hundred forty-six thousand, four hundred twenty".