120784983 has 72 divisors (see below), whose sum is σ = 201230064. Its totient is φ = 64120320.

The previous prime is 120784981. The next prime is 120784999. The reversal of 120784983 is 389487021.

It is not a de Polignac number, because 120784983 - 2¹ = 120784981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120784981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3264441 + ... + 3264477.

It is an arithmetic number, because the mean of its divisors is an integer number (2794862).

Almost surely, 2^120784983 is an apocalyptic number.

120784983 is a deficient number, since it is larger than the sum of its proper divisors (80445081).

120784983 is a wasteful number, since it uses less digits than its factorization.

120784983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 120784983 is about 10990.2221542606. Note that the first 3 decimals coincide. The cubic root of 120784983 is about 494.3155973693.

The spelling of 120784983 in words is "one hundred twenty million, seven hundred eighty-four thousand, nine hundred eighty-three".