123378 has 8 divisors (see below), whose sum is σ = 246768. Its totient is φ = 41124.

The previous prime is 123377. The next prime is 123379. The reversal of 123378 is 873321.

It is an interprime number because it is at equal distance from previous prime (123377) and next prime (123379).

It is a sphenic number, since it is the product of 3 distinct primes.

123378 is an admirable number.

It is a d-powerful number, because it can be written as 1 + 2¹³ + 3⁸ + 3¹⁰ + 7⁵ + 8⁵ .

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (123373) 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, 10276 + ... + 10287.

It is an arithmetic number, because the mean of its divisors is an integer number (30846).

2¹²³³⁷⁸ is an apocalyptic number.

123378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

123378 is a wasteful number, since it uses less digits than its factorization.

123378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20568.

The product of its digits is 1008, while the sum is 24.

The square root of 123378 is about 351.2520462574. The cubic root of 123378 is about 49.7827911056.

Adding to 123378 its reverse (873321), we get a palindrome (996699).

The spelling of 123378 in words is "one hundred twenty-three thousand, three hundred seventy-eight".