120782920 has 16 divisors (see below), whose sum is σ = 271761660. Its totient is φ = 48313152.

The previous prime is 120782897. The next prime is 120782923. The reversal of 120782920 is 29287021.

It can be written as a sum of positive squares in 2 ways, for example, as 116596804 + 4186116 = 10798^2 + 2046^2 .

It is not an unprimeable number, because it can be changed into a prime (120782923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1509747 + ... + 1509826.

Almost surely, 2^120782920 is an apocalyptic number.

120782920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120782920 is an abundant number, since it is smaller than the sum of its proper divisors (150978740).

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

120782920 is a wasteful number, since it uses less digits than its factorization.

120782920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019584 (or 3019580 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 120782920 is about 10990.1282977043. The cubic root of 120782920 is about 494.3127830601.

The spelling of 120782920 in words is "one hundred twenty million, seven hundred eighty-two thousand, nine hundred twenty".