120139 has 8 divisors (see below), whose sum is σ = 131328. Its totient is φ = 109440.

The previous prime is 120121. The next prime is 120157. The reversal of 120139 is 931021.

It is an interprime number because it is at equal distance from previous prime (120121) and next prime (120157).

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

It is a cyclic number.

It is not a de Polignac number, because 120139 - 2⁷ = 120011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534 + ... + 724.

It is an arithmetic number, because the mean of its divisors is an integer number (16416).

2¹²⁰¹³⁹ is an apocalyptic number.

120139 is a deficient number, since it is larger than the sum of its proper divisors (11189).

120139 is a wasteful number, since it uses less digits than its factorization.

120139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 120139 is about 346.6107326671. The cubic root of 120139 is about 49.3432787757.

The spelling of 120139 in words is "one hundred twenty thousand, one hundred thirty-nine".