123838678 has 4 divisors (see below), whose sum is σ = 185758020. Its totient is φ = 61919338.

The previous prime is 123838633. The next prime is 123838681. The reversal of 123838678 is 876838321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 876838321 = 37 ⋅23698333.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30959668 + ... + 30959671.

It is an arithmetic number, because the mean of its divisors is an integer number (46439505).

Almost surely, 2^123838678 is an apocalyptic number.

123838678 is a deficient number, since it is larger than the sum of its proper divisors (61919342).

123838678 is an equidigital number, since it uses as much as digits as its factorization.

123838678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61919341.

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

The square root of 123838678 is about 11128.2827965504. The cubic root of 123838678 is about 498.4467504951.

The spelling of 123838678 in words is "one hundred twenty-three million, eight hundred thirty-eight thousand, six hundred seventy-eight".