123020 has 12 divisors (see below), whose sum is σ = 258384. Its totient is φ = 49200.

The previous prime is 123017. The next prime is 123031. The reversal of 123020 is 20321.

It is a junction number, because it is equal to n+sod(n) for n = 122989 and 123007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056 + ... + 3095.

It is an arithmetic number, because the mean of its divisors is an integer number (21532).

2¹²³⁰²⁰ is an apocalyptic number.

123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123020 is an abundant number, since it is smaller than the sum of its proper divisors (135364).

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

123020 is a wasteful number, since it uses less digits than its factorization.

123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6160 (or 6158 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 123020 is about 350.7420704734. The cubic root of 123020 is about 49.7345936824.

Adding to 123020 its reverse (20321), we get a palindrome (143341).

The spelling of 123020 in words is "one hundred twenty-three thousand, twenty", and thus it is an iban number.