142889597819 has 4 divisors (see below), whose sum is σ = 147816825360. Its totient is φ = 137962370280.

The previous prime is 142889597801. The next prime is 142889597833. The reversal of 142889597819 is 918795988241.

142889597819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918795988241 = 797 ⋅1152818053.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142889597819 is a prime.

It is a super-2 number, since 2×142889597819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142889597119) 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 in 3 ways as a sum of consecutive naturals, for example, 2463613727 + ... + 2463613784.

It is an arithmetic number, because the mean of its divisors is an integer number (36954206340).

Almost surely, 2^142889597819 is an apocalyptic number.

142889597819 is a deficient number, since it is larger than the sum of its proper divisors (4927227541).

142889597819 is an equidigital number, since it uses as much as digits as its factorization.

142889597819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4927227540.

The product of its digits is 104509440, while the sum is 71.

The spelling of 142889597819 in words is "one hundred forty-two billion, eight hundred eighty-nine million, five hundred ninety-seven thousand, eight hundred nineteen".