123885847 has 4 divisors (see below), whose sum is σ = 124534656. Its totient is φ = 123237040.

The previous prime is 123885829. The next prime is 123885863. The reversal of 123885847 is 748588321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748588321 = 13 ⋅57583717.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123885847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123885797 and 123885806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123885247) 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, 324118 + ... + 324499.

It is an arithmetic number, because the mean of its divisors is an integer number (31133664).

Almost surely, 2^123885847 is an apocalyptic number.

123885847 is a deficient number, since it is larger than the sum of its proper divisors (648809).

123885847 is an equidigital number, since it uses as much as digits as its factorization.

123885847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648808.

The product of its digits is 430080, while the sum is 46.

The square root of 123885847 is about 11130.4019244590. The cubic root of 123885847 is about 498.5100270382.

The spelling of 123885847 in words is "one hundred twenty-three million, eight hundred eighty-five thousand, eight hundred forty-seven".