120151 has 4 divisors (see below), whose sum is σ = 122472. Its totient is φ = 117832.

The previous prime is 120121. The next prime is 120157. The reversal of 120151 is 151021.

120151 = 139² + 140² + ... + 144².

It is a happy number.

120151 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151021 = 13 ⋅11617.

It is a cyclic number.

It is not a de Polignac number, because 120151 - 2¹³ = 111959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120157) 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, 1081 + ... + 1186.

It is an arithmetic number, because the mean of its divisors is an integer number (30618).

2¹²⁰¹⁵¹ is an apocalyptic number.

120151 is a deficient number, since it is larger than the sum of its proper divisors (2321).

120151 is an equidigital number, since it uses as much as digits as its factorization.

120151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 120151 is about 346.6280427201. The cubic root of 120151 is about 49.3449215939.

Adding to 120151 its reverse (151021), we get a palindrome (271172).

The spelling of 120151 in words is "one hundred twenty thousand, one hundred fifty-one".