120491291 has 4 divisors (see below), whose sum is σ = 127579032. Its totient is φ = 113403552.

The previous prime is 120491281. The next prime is 120491297. The reversal of 120491291 is 192194021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192194021 = 37 ⋅5194433.

It is a cyclic number.

It is not a de Polignac number, because 120491291 - 2¹⁸ = 120229147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120491297) 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, 3543845 + ... + 3543878.

It is an arithmetic number, because the mean of its divisors is an integer number (31894758).

Almost surely, 2^120491291 is an apocalyptic number.

120491291 is a deficient number, since it is larger than the sum of its proper divisors (7087741).

120491291 is an equidigital number, since it uses as much as digits as its factorization.

120491291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087740.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 120491291 is about 10976.8525088023. The cubic root of 120491291 is about 493.9146248893.

The spelling of 120491291 in words is "one hundred twenty million, four hundred ninety-one thousand, two hundred ninety-one".