123143241115245 has 16 divisors (see below), whose sum is σ = 212185276998912. Its totient is φ = 60624364856640.

The previous prime is 123143241115243. The next prime is 123143241115261. The reversal of 123143241115245 is 542511142341321.

It is a happy number.

It is not a de Polignac number, because 123143241115245 - 2¹ = 123143241115243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123143241115243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315751900101 + ... + 315751900490.

It is an arithmetic number, because the mean of its divisors is an integer number (13261579812432).

Almost surely, 2^{123143241115245} is an apocalyptic number.

123143241115245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123143241115245 is a deficient number, since it is larger than the sum of its proper divisors (89042035883667).

123143241115245 is a wasteful number, since it uses less digits than its factorization.

123143241115245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631503800612.

The product of its digits is 115200, while the sum is 39.

Adding to 123143241115245 its reverse (542511142341321), we get a palindrome (665654383456566).

The spelling of 123143241115245 in words is "one hundred twenty-three trillion, one hundred forty-three billion, two hundred forty-one million, one hundred fifteen thousand, two hundred forty-five".