120820493380 has 24 divisors (see below), whose sum is σ = 260580417048. Its totient is φ = 47022029568.

The previous prime is 120820493377. The next prime is 120820493383. The reversal of 120820493380 is 83394028021.

It is an interprime number because it is at equal distance from previous prime (120820493377) and next prime (120820493383).

It can be written as a sum of positive squares in 4 ways, for example, as 47852437504 + 72968055876 = 218752^2 + 270126^2 .

It is not an unprimeable number, because it can be changed into a prime (120820493383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81634729 + ... + 81636208.

It is an arithmetic number, because the mean of its divisors is an integer number (10857517377).

Almost surely, 2^120820493380 is an apocalyptic number.

120820493380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120820493380 is an abundant number, since it is smaller than the sum of its proper divisors (139759923668).

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

120820493380 is a wasteful number, since it uses less digits than its factorization.

120820493380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163270983 (or 163270981 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 120820493380 in words is "one hundred twenty billion, eight hundred twenty million, four hundred ninety-three thousand, three hundred eighty".