123144421241 has 4 divisors (see below), whose sum is σ = 123182703732. Its totient is φ = 123106138752.

The previous prime is 123144421219. The next prime is 123144421271. The reversal of 123144421241 is 142124441321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46182010000 + 76962411241 = 214900^2 + 277421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123144421241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123144421201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19136420 + ... + 19142853.

It is an arithmetic number, because the mean of its divisors is an integer number (30795675933).

Almost surely, 2^123144421241 is an apocalyptic number.

It is an amenable number.

123144421241 is a deficient number, since it is larger than the sum of its proper divisors (38282491).

123144421241 is an equidigital number, since it uses as much as digits as its factorization.

123144421241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38282490.

The product of its digits is 6144, while the sum is 29.

Adding to 123144421241 its reverse (142124441321), we get a palindrome (265268862562).

The spelling of 123144421241 in words is "one hundred twenty-three billion, one hundred forty-four million, four hundred twenty-one thousand, two hundred forty-one".