4142857 has 2 divisors, whose sum is σ = 4142858. Its totient is φ = 4142856.

The previous prime is 4142813. The next prime is 4142863. The reversal of 4142857 is 7582414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2595321 + 1547536 = 1611^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 4142857 - 2¹⁵ = 4110089 is a prime.

4142857 is a modest number, since divided by 142857 gives 4 as remainder.

It is not a weakly prime, because it can be changed into another prime (4142657) 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 as a sum of consecutive naturals, namely, 2071428 + 2071429.

It is an arithmetic number, because the mean of its divisors is an integer number (2071429).

Almost surely, 2^4142857 is an apocalyptic number.

It is an amenable number.

4142857 is a deficient number, since it is larger than the sum of its proper divisors (1).

4142857 is an equidigital number, since it uses as much as digits as its factorization.

4142857 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4142857 is about 2035.4009433033. The cubic root of 4142857 is about 160.6078053430.

The spelling of 4142857 in words is "four million, one hundred forty-two thousand, eight hundred fifty-seven".