142605209867 has 2 divisors, whose sum is σ = 142605209868. Its totient is φ = 142605209866.

The previous prime is 142605209863. The next prime is 142605209911. The reversal of 142605209867 is 768902506241.

142605209867 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 is an emirp because it is prime and its reverse (768902506241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142605209867 - 2² = 142605209863 is a prime.

It is a super-2 number, since 2×142605209867² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142605209863) 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, 71302604933 + 71302604934.

It is an arithmetic number, because the mean of its divisors is an integer number (71302604934).

Almost surely, 2^142605209867 is an apocalyptic number.

142605209867 is a deficient number, since it is larger than the sum of its proper divisors (1).

142605209867 is an equidigital number, since it uses as much as digits as its factorization.

142605209867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 142605209867 in words is "one hundred forty-two billion, six hundred five million, two hundred nine thousand, eight hundred sixty-seven".