120281 has 4 divisors (see below), whose sum is σ = 137472. Its totient is φ = 103092.

The previous prime is 120277. The next prime is 120283. The reversal of 120281 is 182021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 182021 = 7 ⋅26003.

It is a cyclic number.

It is not a de Polignac number, because 120281 - 2² = 120277 is a prime.

It is a super-2 number, since 2×120281² = 28935037922, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 120281.

It is not an unprimeable number, because it can be changed into a prime (120283) 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 in 3 ways as a sum of consecutive naturals, for example, 8585 + ... + 8598.

It is an arithmetic number, because the mean of its divisors is an integer number (34368).

2¹²⁰²⁸¹ is an apocalyptic number.

It is an amenable number.

120281 is a deficient number, since it is larger than the sum of its proper divisors (17191).

120281 is an equidigital number, since it uses as much as digits as its factorization.

120281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17190.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 120281 is about 346.8155129172. The cubic root of 120281 is about 49.3627117847.

Adding to 120281 its sum of digits (14), we get a triangular number (120295 = T₄₉₀).

The spelling of 120281 in words is "one hundred twenty thousand, two hundred eighty-one".