123144444243 has 6 divisors (see below), whose sum is σ = 177875308364. Its totient is φ = 82096296156.

The previous prime is 123144444221. The next prime is 123144444277. The reversal of 123144444243 is 342444441321.

123144444243 is a `hidden beast` number, since 123 + 14 + 44 + 442 + 43 = 666.

It is not a de Polignac number, because 123144444243 - 2⁹ = 123144443731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123144444198 and 123144444207.

It is not an unprimeable number, because it can be changed into a prime (123144444043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6841358005 + ... + 6841358022.

Almost surely, 2^123144444243 is an apocalyptic number.

123144444243 is a deficient number, since it is larger than the sum of its proper divisors (54730864121).

123144444243 is a wasteful number, since it uses less digits than its factorization.

123144444243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13682716033 (or 13682716030 counting only the distinct ones).

The product of its digits is 147456, while the sum is 36.

Adding to 123144444243 its reverse (342444441321), we get a palindrome (465588885564).

The spelling of 123144444243 in words is "one hundred twenty-three billion, one hundred forty-four million, four hundred forty-four thousand, two hundred forty-three".