123144021123441 has 4 divisors (see below), whose sum is σ = 164192028164592. Its totient is φ = 82096014082292.

The previous prime is 123144021123401. The next prime is 123144021123451. The reversal of 123144021123441 is 144321120441321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123144021123441 - 2²¹ = 123144019026289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123144021123401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20524003520571 + ... + 20524003520576.

It is an arithmetic number, because the mean of its divisors is an integer number (41048007041148).

Almost surely, 2^{123144021123441} is an apocalyptic number.

It is an amenable number.

123144021123441 is a deficient number, since it is larger than the sum of its proper divisors (41048007041151).

123144021123441 is an equidigital number, since it uses as much as digits as its factorization.

123144021123441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41048007041150.

The product of its (nonzero) digits is 18432, while the sum is 33.

Adding to 123144021123441 its reverse (144321120441321), we get a palindrome (267465141564762).

The spelling of 123144021123441 in words is "one hundred twenty-three trillion, one hundred forty-four billion, twenty-one million, one hundred twenty-three thousand, four hundred forty-one".