142167777 has 8 divisors (see below), whose sum is σ = 190941216. Its totient is φ = 94086432.

The previous prime is 142167763. The next prime is 142167793. The reversal of 142167777 is 777761241.

142167777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142167777 - 2⁶ = 142167713 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142167877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172543 + ... + 173364.

It is an arithmetic number, because the mean of its divisors is an integer number (23867652).

Almost surely, 2^142167777 is an apocalyptic number.

It is an amenable number.

142167777 is a deficient number, since it is larger than the sum of its proper divisors (48773439).

142167777 is a wasteful number, since it uses less digits than its factorization.

142167777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346047.

The product of its digits is 115248, while the sum is 42.

The square root of 142167777 is about 11923.4129761575. The cubic root of 142167777 is about 521.9157355799.

The spelling of 142167777 in words is "one hundred forty-two million, one hundred sixty-seven thousand, seven hundred seventy-seven".