142705667 has 8 divisors (see below), whose sum is σ = 162723456. Its totient is φ = 123979392.

The previous prime is 142705663. The next prime is 142705699. The reversal of 142705667 is 766507241.

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

It is a cyclic number.

It is not a de Polignac number, because 142705667 - 2² = 142705663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142705667.

It is not an unprimeable number, because it can be changed into a prime (142705663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322643 + ... + 323084.

It is an arithmetic number, because the mean of its divisors is an integer number (20340432).

Almost surely, 2^142705667 is an apocalyptic number.

142705667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

142705667 is a deficient number, since it is larger than the sum of its proper divisors (20017789).

142705667 is a wasteful number, since it uses less digits than its factorization.

142705667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645757.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 142705667 is about 11945.9477229728. The cubic root of 142705667 is about 522.5731277424.

The spelling of 142705667 in words is "one hundred forty-two million, seven hundred five thousand, six hundred sixty-seven".