198248123 has 4 divisors (see below), whose sum is σ = 200475720. Its totient is φ = 196020528.

The previous prime is 198248119. The next prime is 198248129. The reversal of 198248123 is 321842891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321842891 = 563 ⋅571657.

It is a cyclic number.

It is not a de Polignac number, because 198248123 - 2² = 198248119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198248129) 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, 1113665 + ... + 1113842.

It is an arithmetic number, because the mean of its divisors is an integer number (50118930).

Almost surely, 2^198248123 is an apocalyptic number.

198248123 is a deficient number, since it is larger than the sum of its proper divisors (2227597).

198248123 is an equidigital number, since it uses as much as digits as its factorization.

198248123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227596.

The product of its digits is 27648, while the sum is 38.

The square root of 198248123 is about 14080.0611859466. The cubic root of 198248123 is about 583.0910311953.

It can be divided in two parts, 1982 and 48123, that added together give a palindrome (50105).

The spelling of 198248123 in words is "one hundred ninety-eight million, two hundred forty-eight thousand, one hundred twenty-three".