144242112121013 has 4 divisors (see below), whose sum is σ = 144242212263180. Its totient is φ = 144242011978848.

The previous prime is 144242112120881. The next prime is 144242112121087. The reversal of 144242112121013 is 310121211242441.

It is a happy number.

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 140358209260369 + 3883902860644 = 11847287^2 + 1970762^2 .

It is a cyclic number.

It is not a de Polignac number, because 144242112121013 - 2¹⁸ = 144242111858869 is a prime.

It is a super-2 number, since 2×144242112121013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144242112121213) 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, 47878520 + ... + 50801937.

It is an arithmetic number, because the mean of its divisors is an integer number (36060553065795).

Almost surely, 2^{144242112121013} is an apocalyptic number.

It is an amenable number.

144242112121013 is a deficient number, since it is larger than the sum of its proper divisors (100142167).

144242112121013 is an equidigital number, since it uses as much as digits as its factorization.

144242112121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100142166.

The product of its (nonzero) digits is 3072, while the sum is 29.

Adding to 144242112121013 its reverse (310121211242441), we get a palindrome (454363323363454).

The spelling of 144242112121013 in words is "one hundred forty-four trillion, two hundred forty-two billion, one hundred twelve million, one hundred twenty-one thousand, thirteen".