123919243 has 8 divisors (see below), whose sum is σ = 143944160. Its totient is φ = 104474880.

The previous prime is 123919231. The next prime is 123919259. The reversal of 123919243 is 342919321.

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

It is a cyclic number.

It is not a de Polignac number, because 123919243 - 2²⁵ = 90364811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123919199 and 123919208.

It is not an unprimeable number, because it can be changed into a prime (123919643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144678 + ... + 145531.

It is an arithmetic number, because the mean of its divisors is an integer number (17993020).

Almost surely, 2^123919243 is an apocalyptic number.

123919243 is a deficient number, since it is larger than the sum of its proper divisors (20024917).

123919243 is an equidigital number, since it uses as much as digits as its factorization.

123919243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290277.

The product of its digits is 11664, while the sum is 34.

The square root of 123919243 is about 11131.9020387353. The cubic root of 123919243 is about 498.5548175867.

The spelling of 123919243 in words is "one hundred twenty-three million, nine hundred nineteen thousand, two hundred forty-three".