142770209977 has 4 divisors (see below), whose sum is σ = 143812328436. Its totient is φ = 141728091520.

The previous prime is 142770209941. The next prime is 142770210047. The reversal of 142770209977 is 779902077241.

It is a happy number.

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 68426189056 + 74344020921 = 261584^2 + 272661^2 .

It is a cyclic number.

It is not a de Polignac number, because 142770209977 - 2²³ = 142761821369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142770209377) by changing a digit.

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, 521059024 + ... + 521059297.

It is an arithmetic number, because the mean of its divisors is an integer number (35953082109).

Almost surely, 2^142770209977 is an apocalyptic number.

It is an amenable number.

142770209977 is a deficient number, since it is larger than the sum of its proper divisors (1042118459).

142770209977 is a wasteful number, since it uses less digits than its factorization.

142770209977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042118458.

The product of its (nonzero) digits is 3111696, while the sum is 55.

The spelling of 142770209977 in words is "one hundred forty-two billion, seven hundred seventy million, two hundred nine thousand, nine hundred seventy-seven".