120389 has 4 divisors (see below), whose sum is σ = 121440. Its totient is φ = 119340.

The previous prime is 120383. The next prime is 120391. The reversal of 120389 is 983021.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 983021 = 13 ⋅75617.

It is a cyclic number.

It is not a de Polignac number, because 120389 - 2¹² = 116293 is a prime.

It is a super-2 number, since 2×120389² = 28987022642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 329 + ... + 590.

It is an arithmetic number, because the mean of its divisors is an integer number (30360).

2¹²⁰³⁸⁹ is an apocalyptic number.

It is an amenable number.

120389 is a deficient number, since it is larger than the sum of its proper divisors (1051).

120389 is an equidigital number, since it uses as much as digits as its factorization.

120389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 120389 is about 346.9711803594. The cubic root of 120389 is about 49.3774815823.

The spelling of 120389 in words is "one hundred twenty thousand, three hundred eighty-nine".