142243503121 has 2 divisors, whose sum is σ = 142243503122. Its totient is φ = 142243503120.

The previous prime is 142243503109. The next prime is 142243503137. The reversal of 142243503121 is 121305342241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115643524096 + 26599979025 = 340064^2 + 163095^2 .

It is a cyclic number.

It is not a de Polignac number, because 142243503121 - 2⁷ = 142243502993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142243503121.

It is not a weakly prime, because it can be changed into another prime (142243503191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71121751560 + 71121751561.

It is an arithmetic number, because the mean of its divisors is an integer number (71121751561).

Almost surely, 2^142243503121 is an apocalyptic number.

It is an amenable number.

142243503121 is a deficient number, since it is larger than the sum of its proper divisors (1).

142243503121 is an equidigital number, since it uses as much as digits as its factorization.

142243503121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 142243503121 its reverse (121305342241), we get a palindrome (263548845362).

The spelling of 142243503121 in words is "one hundred forty-two billion, two hundred forty-three million, five hundred three thousand, one hundred twenty-one".