120974725291 has 4 divisors (see below), whose sum is σ = 138256828912. Its totient is φ = 103692621672.

The previous prime is 120974725259. The next prime is 120974725301. The reversal of 120974725291 is 192527479021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192527479021 = 67 ⋅2873544463.

It is a cyclic number.

It is not a de Polignac number, because 120974725291 - 2⁵ = 120974725259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120974725231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8641051800 + ... + 8641051813.

It is an arithmetic number, because the mean of its divisors is an integer number (34564207228).

Almost surely, 2^120974725291 is an apocalyptic number.

120974725291 is a deficient number, since it is larger than the sum of its proper divisors (17282103621).

120974725291 is an equidigital number, since it uses as much as digits as its factorization.

120974725291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17282103620.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 120974725291 in words is "one hundred twenty billion, nine hundred seventy-four million, seven hundred twenty-five thousand, two hundred ninety-one".