142768445185 has 4 divisors (see below), whose sum is σ = 171322134228. Its totient is φ = 114214756144.

The previous prime is 142768445173. The next prime is 142768445191. The reversal of 142768445185 is 581544867241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50022006336 + 92746438849 = 223656^2 + 304543^2 .

It is a cyclic number.

It is not a de Polignac number, because 142768445185 - 2⁵ = 142768445153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 14276844514 + ... + 14276844523.

It is an arithmetic number, because the mean of its divisors is an integer number (42830533557).

Almost surely, 2^142768445185 is an apocalyptic number.

It is an amenable number.

142768445185 is a deficient number, since it is larger than the sum of its proper divisors (28553689043).

142768445185 is an equidigital number, since it uses as much as digits as its factorization.

142768445185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28553689042.

The product of its digits is 8601600, while the sum is 55.

The spelling of 142768445185 in words is "one hundred forty-two billion, seven hundred sixty-eight million, four hundred forty-five thousand, one hundred eighty-five".