3142705 has 8 divisors (see below), whose sum is σ = 3993192. Its totient is φ = 2366208.

The previous prime is 3142693. The next prime is 3142709. The reversal of 3142705 is 5072413.

It can be written as a sum of positive squares in 4 ways, for example, as 279841 + 2862864 = 529^2 + 1692^2 .

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 3142705 - 2⁹ = 3142193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3142709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18402 + ... + 18571.

It is an arithmetic number, because the mean of its divisors is an integer number (499149).

Almost surely, 2^3142705 is an apocalyptic number.

It is an amenable number.

3142705 is a deficient number, since it is larger than the sum of its proper divisors (850487).

3142705 is a wasteful number, since it uses less digits than its factorization.

3142705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36995.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 3142705 is about 1772.7676102637. The cubic root of 3142705 is about 146.4764723600.

The spelling of 3142705 in words is "three million, one hundred forty-two thousand, seven hundred five".