123144444242 has 4 divisors (see below), whose sum is σ = 184716666366. Its totient is φ = 61572222120.

The previous prime is 123144444221. The next prime is 123144444277. The reversal of 123144444242 is 242444441321.

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

It can be written as a sum of positive squares in only one way, i.e., 112413348961 + 10731095281 = 335281^2 + 103591^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30786111059 + ... + 30786111062.

Almost surely, 2^123144444242 is an apocalyptic number.

123144444242 is a deficient number, since it is larger than the sum of its proper divisors (61572222124).

123144444242 is an equidigital number, since it uses as much as digits as its factorization.

123144444242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61572222123.

The product of its digits is 98304, while the sum is 35.

Adding to 123144444242 its reverse (242444441321), we get a palindrome (365588885563).

The spelling of 123144444242 in words is "one hundred twenty-three billion, one hundred forty-four million, four hundred forty-four thousand, two hundred forty-two".