120984756289 has 4 divisors (see below), whose sum is σ = 120989063124. Its totient is φ = 120980449456.

The previous prime is 120984756287. The next prime is 120984756293. The reversal of 120984756289 is 982657489021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 982657489021 = 13 ⋅75589037617.

It can be written as a sum of positive squares in 2 ways, for example, as 92715378064 + 28269378225 = 304492^2 + 168135^2 .

It is a cyclic number.

It is not a de Polignac number, because 120984756289 - 2¹ = 120984756287 is a prime.

It is a super-2 number, since 2×120984756289² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120984756287) 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 3 ways as a sum of consecutive naturals, for example, 2111002 + ... + 2167555.

It is an arithmetic number, because the mean of its divisors is an integer number (30247265781).

Almost surely, 2^120984756289 is an apocalyptic number.

It is an amenable number.

120984756289 is a deficient number, since it is larger than the sum of its proper divisors (4306835).

120984756289 is an equidigital number, since it uses as much as digits as its factorization.

120984756289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306834.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 120984756289 in words is "one hundred twenty billion, nine hundred eighty-four million, seven hundred fifty-six thousand, two hundred eighty-nine".