123340 has 24 divisors (see below), whose sum is σ = 296352. Its totient is φ = 42240.

The previous prime is 123323. The next prime is 123341. The reversal of 123340 is 43321.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 123340.

It is not an unprimeable number, because it can be changed into a prime (123341) 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, 301 + ... + 580.

It is an arithmetic number, because the mean of its divisors is an integer number (12348).

2¹²³³⁴⁰ is an apocalyptic number.

123340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123340 is an abundant number, since it is smaller than the sum of its proper divisors (173012).

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

123340 is a wasteful number, since it uses less digits than its factorization.

123340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 123340 is about 351.1979498801. The cubic root of 123340 is about 49.7776796046. Note that the first 3 decimals are identical.

Adding to 123340 its reverse (43321), we get a palindrome (166661).

The spelling of 123340 in words is "one hundred twenty-three thousand, three hundred forty", and thus it is an iban number.