142442161637 has 2 divisors, whose sum is σ = 142442161638. Its totient is φ = 142442161636.

The previous prime is 142442161613. The next prime is 142442161681. The reversal of 142442161637 is 736161244241.

142442161637 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., 123095020801 + 19347140836 = 350849^2 + 139094^2 .

It is a cyclic number.

It is not a de Polignac number, because 142442161637 - 2¹⁰ = 142442160613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142442161594 and 142442161603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142442161607) 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, 71221080818 + 71221080819.

It is an arithmetic number, because the mean of its divisors is an integer number (71221080819).

Almost surely, 2^142442161637 is an apocalyptic number.

It is an amenable number.

142442161637 is a deficient number, since it is larger than the sum of its proper divisors (1).

142442161637 is an equidigital number, since it uses as much as digits as its factorization.

142442161637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 41.

The spelling of 142442161637 in words is "one hundred forty-two billion, four hundred forty-two million, one hundred sixty-one thousand, six hundred thirty-seven".