142354544303221 has 2 divisors, whose sum is σ = 142354544303222. Its totient is φ = 142354544303220.

The previous prime is 142354544303201. The next prime is 142354544303227. The reversal of 142354544303221 is 122303445453241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141525260880721 + 829283422500 = 11896439^2 + 910650^2 .

It is a cyclic number.

It is not a de Polignac number, because 142354544303221 - 2¹⁷ = 142354544172149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142354544303227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71177272151610 + 71177272151611.

It is an arithmetic number, because the mean of its divisors is an integer number (71177272151611).

Almost surely, 2^{142354544303221} is an apocalyptic number.

It is an amenable number.

142354544303221 is a deficient number, since it is larger than the sum of its proper divisors (1).

142354544303221 is an equidigital number, since it uses as much as digits as its factorization.

142354544303221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 142354544303221 its reverse (122303445453241), we get a palindrome (264657989756462).

The spelling of 142354544303221 in words is "one hundred forty-two trillion, three hundred fifty-four billion, five hundred forty-four million, three hundred three thousand, two hundred twenty-one".