142043340221 has 2 divisors, whose sum is σ = 142043340222. Its totient is φ = 142043340220.

The previous prime is 142043340203. The next prime is 142043340277. The reversal of 142043340221 is 122043340241.

142043340221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140831325625 + 1212014596 = 375275^2 + 34814^2 .

It is a cyclic number.

It is not a de Polignac number, because 142043340221 - 2²² = 142039145917 is a prime.

It is a super-2 number, since 2×142043340221² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142043340121) 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, 71021670110 + 71021670111.

It is an arithmetic number, because the mean of its divisors is an integer number (71021670111).

Almost surely, 2^142043340221 is an apocalyptic number.

It is an amenable number.

142043340221 is a deficient number, since it is larger than the sum of its proper divisors (1).

142043340221 is an equidigital number, since it uses as much as digits as its factorization.

142043340221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 142043340221 its reverse (122043340241), we get a palindrome (264086680462).

The spelling of 142043340221 in words is "one hundred forty-two billion, forty-three million, three hundred forty thousand, two hundred twenty-one".