120387 has 4 divisors (see below), whose sum is σ = 160520. Its totient is φ = 80256.

The previous prime is 120383. The next prime is 120391. The reversal of 120387 is 783021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (120383) and next prime (120391).

It is not a de Polignac number, because 120387 - 2² = 120383 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20062 + ... + 20067.

It is an arithmetic number, because the mean of its divisors is an integer number (40130).

2¹²⁰³⁸⁷ is an apocalyptic number.

120387 is a deficient number, since it is larger than the sum of its proper divisors (40133).

120387 is an equidigital number, since it uses as much as digits as its factorization.

120387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40132.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 120387 is about 346.9682982637. The cubic root of 120387 is about 49.3772081478.

The spelling of 120387 in words is "one hundred twenty thousand, three hundred eighty-seven".