143246142121 has 2 divisors, whose sum is σ = 143246142122. Its totient is φ = 143246142120.

The previous prime is 143246142113. The next prime is 143246142139. The reversal of 143246142121 is 121241642341.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111933070096 + 31313072025 = 334564^2 + 176955^2 .

It is an emirp because it is prime and its reverse (121241642341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143246142121 - 2³ = 143246142113 is a prime.

It is not a weakly prime, because it can be changed into another prime (143246142161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71623071060 + 71623071061.

It is an arithmetic number, because the mean of its divisors is an integer number (71623071061).

Almost surely, 2^143246142121 is an apocalyptic number.

It is an amenable number.

143246142121 is a deficient number, since it is larger than the sum of its proper divisors (1).

143246142121 is an equidigital number, since it uses as much as digits as its factorization.

143246142121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

Adding to 143246142121 its reverse (121241642341), we get a palindrome (264487784462).

The spelling of 143246142121 in words is "one hundred forty-three billion, two hundred forty-six million, one hundred forty-two thousand, one hundred twenty-one".