120505871 has 2 divisors, whose sum is σ = 120505872. Its totient is φ = 120505870.

The previous prime is 120505867. The next prime is 120505883. The reversal of 120505871 is 178505021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120505871 - 2² = 120505867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120505831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60252935 + 60252936.

It is an arithmetic number, because the mean of its divisors is an integer number (60252936).

Almost surely, 2^120505871 is an apocalyptic number.

120505871 is a deficient number, since it is larger than the sum of its proper divisors (1).

120505871 is an equidigital number, since it uses as much as digits as its factorization.

120505871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 120505871 is about 10977.5166135151. The cubic root of 120505871 is about 493.9345460657.

The spelling of 120505871 in words is "one hundred twenty million, five hundred five thousand, eight hundred seventy-one".