142783867994 has 4 divisors (see below), whose sum is σ = 214175801994. Its totient is φ = 71391933996.

The previous prime is 142783867973. The next prime is 142783868027. The reversal of 142783867994 is 499768387241.

142783867994 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: 499768387241 = 61 ⋅8192924381.

It can be written as a sum of positive squares in only one way, i.e., 110612782225 + 32171085769 = 332585^2 + 179363^2 .

It is an unprimeable number.

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, 35695966997 + ... + 35695967000.

Almost surely, 2^142783867994 is an apocalyptic number.

142783867994 is a deficient number, since it is larger than the sum of its proper divisors (71391934000).

142783867994 is an equidigital number, since it uses as much as digits as its factorization.

142783867994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71391933999.

The product of its digits is 146313216, while the sum is 68.

The spelling of 142783867994 in words is "one hundred forty-two billion, seven hundred eighty-three million, eight hundred sixty-seven thousand, nine hundred ninety-four".