142765705 has 8 divisors (see below), whose sum is σ = 171861192. Its totient is φ = 113851008.

The previous prime is 142765673. The next prime is 142765739. The reversal of 142765705 is 507567241.

It can be written as a sum of positive squares in 4 ways, for example, as 2509056 + 140256649 = 1584^2 + 11843^2 .

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 142765705 - 2⁵ = 142765673 is a prime.

It is a super-3 number, since 3×142765705³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43452 + ... + 46621.

It is an arithmetic number, because the mean of its divisors is an integer number (21482649).

Almost surely, 2^142765705 is an apocalyptic number.

It is an amenable number.

142765705 is a deficient number, since it is larger than the sum of its proper divisors (29095487).

142765705 is an equidigital number, since it uses as much as digits as its factorization.

142765705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90395.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 142765705 is about 11948.4603610674. The cubic root of 142765705 is about 522.6464017459.

The spelling of 142765705 in words is "one hundred forty-two million, seven hundred sixty-five thousand, seven hundred five".