142425717777 has 24 divisors (see below), whose sum is σ = 237398155904. Its totient is φ = 80595964224.

The previous prime is 142425717697. The next prime is 142425717823. The reversal of 142425717777 is 777717524241.

142425717777 is a `hidden beast` number, since 1 + 42 + 425 + 7 + 177 + 7 + 7 = 666.

It is not a de Polignac number, because 142425717777 - 2⁷ = 142425717649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142425717377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10967908 + ... + 10980885.

Almost surely, 2^142425717777 is an apocalyptic number.

It is an amenable number.

142425717777 is a deficient number, since it is larger than the sum of its proper divisors (94972438127).

142425717777 is a wasteful number, since it uses less digits than its factorization.

142425717777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21948909 (or 21948906 counting only the distinct ones).

The product of its digits is 5378240, while the sum is 54.

The spelling of 142425717777 in words is "one hundred forty-two billion, four hundred twenty-five million, seven hundred seventeen thousand, seven hundred seventy-seven".