120561271 has 2 divisors, whose sum is σ = 120561272. Its totient is φ = 120561270.

The previous prime is 120561257. The next prime is 120561299. The reversal of 120561271 is 172165021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120561271 - 2⁷ = 120561143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120561241) 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 as a sum of consecutive naturals, namely, 60280635 + 60280636.

It is an arithmetic number, because the mean of its divisors is an integer number (60280636).

Almost surely, 2^120561271 is an apocalyptic number.

120561271 is a deficient number, since it is larger than the sum of its proper divisors (1).

120561271 is an equidigital number, since it uses as much as digits as its factorization.

120561271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 120561271 is about 10980.0396629520. The cubic root of 120561271 is about 494.0102264215.

The spelling of 120561271 in words is "one hundred twenty million, five hundred sixty-one thousand, two hundred seventy-one".