142355340221 has 2 divisors, whose sum is σ = 142355340222. Its totient is φ = 142355340220.

The previous prime is 142355340187. The next prime is 142355340233. The reversal of 142355340221 is 122043553241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111242260900 + 31113079321 = 333530^2 + 176389^2 .

It is a cyclic number.

It is not a de Polignac number, because 142355340221 - 2¹⁴ = 142355323837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142355340241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71177670110 + 71177670111.

It is an arithmetic number, because the mean of its divisors is an integer number (71177670111).

Almost surely, 2^142355340221 is an apocalyptic number.

It is an amenable number.

142355340221 is a deficient number, since it is larger than the sum of its proper divisors (1).

142355340221 is an equidigital number, since it uses as much as digits as its factorization.

142355340221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 142355340221 its reverse (122043553241), we get a palindrome (264398893462).

The spelling of 142355340221 in words is "one hundred forty-two billion, three hundred fifty-five million, three hundred forty thousand, two hundred twenty-one".