123386878 has 4 divisors (see below), whose sum is σ = 185080320. Its totient is φ = 61693438.

The previous prime is 123386869. The next prime is 123386903. The reversal of 123386878 is 878683321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30846718 + ... + 30846721.

It is an arithmetic number, because the mean of its divisors is an integer number (46270080).

Almost surely, 2^123386878 is an apocalyptic number.

123386878 is a deficient number, since it is larger than the sum of its proper divisors (61693442).

123386878 is an equidigital number, since it uses as much as digits as its factorization.

123386878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61693441.

The product of its digits is 387072, while the sum is 46.

The square root of 123386878 is about 11107.9646200373. The cubic root of 123386878 is about 497.8398516244.

The spelling of 123386878 in words is "one hundred twenty-three million, three hundred eighty-six thousand, eight hundred seventy-eight".