123982 has 4 divisors (see below), whose sum is σ = 185976. Its totient is φ = 61990.

The previous prime is 123979. The next prime is 123983. The reversal of 123982 is 289321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289321 = 349 ⋅829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30994 + ... + 30997.

It is an arithmetic number, because the mean of its divisors is an integer number (46494).

2¹²³⁹⁸² is an apocalyptic number.

123982 is a deficient number, since it is larger than the sum of its proper divisors (61994).

123982 is an equidigital number, since it uses as much as digits as its factorization.

123982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61993.

The product of its digits is 864, while the sum is 25.

The square root of 123982 is about 352.1107780231. The cubic root of 123982 is about 49.8638965197.

It can be divided in two parts, 123 and 982, that multiplied together give a triangular number (120786 = T₄₉₁).

The spelling of 123982 in words is "one hundred twenty-three thousand, nine hundred eighty-two".