4142785 has 4 divisors (see below), whose sum is σ = 4971348. Its totient is φ = 3314224.

The previous prime is 4142767. The next prime is 4142791. The reversal of 4142785 is 5872414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5872414 = 2 ⋅2936207.

It can be written as a sum of positive squares in 2 ways, for example, as 638401 + 3504384 = 799^2 + 1872^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142785 - 2⁵ = 4142753 is a prime.

It is a Duffinian number.

4142785 is a lucky number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 414274 + ... + 414283.

It is an arithmetic number, because the mean of its divisors is an integer number (1242837).

Almost surely, 2^4142785 is an apocalyptic number.

It is an amenable number.

4142785 is a deficient number, since it is larger than the sum of its proper divisors (828563).

4142785 is an equidigital number, since it uses as much as digits as its factorization.

4142785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828562.

The product of its digits is 8960, while the sum is 31.

The square root of 4142785 is about 2035.3832562935. The cubic root of 4142785 is about 160.6068749199.

The spelling of 4142785 in words is "four million, one hundred forty-two thousand, seven hundred eighty-five".