120138 has 8 divisors (see below), whose sum is σ = 240288. Its totient is φ = 40044.

The previous prime is 120121. The next prime is 120157. The reversal of 120138 is 831021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

120138 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10006 + ... + 10017.

It is an arithmetic number, because the mean of its divisors is an integer number (30036).

2¹²⁰¹³⁸ is an apocalyptic number.

120138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120138 is a wasteful number, since it uses less digits than its factorization.

120138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 120138 is about 346.6092901236. The cubic root of 120138 is about 49.3431418692.

Adding to 120138 its reverse (831021), we get a palindrome (951159).

It can be divided in two parts, 12013 and 8, that added together give a palindrome (12021).

The spelling of 120138 in words is "one hundred twenty thousand, one hundred thirty-eight".