142770978202 has 4 divisors (see below), whose sum is σ = 214156467306. Its totient is φ = 71385489100.

The previous prime is 142770978199. The next prime is 142770978227. The reversal of 142770978202 is 202879077241.

142770978202 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: 202879077241 = 450421².

It can be written as a sum of positive squares in only one way, i.e., 96807477321 + 45963500881 = 311139^2 + 214391^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 35692744549 + ... + 35692744552.

Almost surely, 2^142770978202 is an apocalyptic number.

142770978202 is a deficient number, since it is larger than the sum of its proper divisors (71385489104).

142770978202 is an equidigital number, since it uses as much as digits as its factorization.

142770978202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71385489103.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 142770978202 in words is "one hundred forty-two billion, seven hundred seventy million, nine hundred seventy-eight thousand, two hundred two".