120181 has 2 divisors, whose sum is σ = 120182. Its totient is φ = 120180.

The previous prime is 120167. The next prime is 120193. The reversal of 120181 is 181021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119025 + 1156 = 345^2 + 34^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120181 is a prime.

It is a super-2 number, since 2×120181² = 28886945522, which contains 22 as substring.

It is equal to p₁₁₃₁₇ and since 120181 and 11317 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60090 + 60091.

It is an arithmetic number, because the mean of its divisors is an integer number (60091).

2¹²⁰¹⁸¹ is an apocalyptic number.

It is an amenable number.

120181 is a deficient number, since it is larger than the sum of its proper divisors (1).

120181 is an equidigital number, since it uses as much as digits as its factorization.

120181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 120181 is about 346.6713140714. The cubic root of 120181 is about 49.3490281611.

The spelling of 120181 in words is "one hundred twenty thousand, one hundred eighty-one".