10142857 has 2 divisors, whose sum is σ = 10142858. Its totient is φ = 10142856.

The previous prime is 10142813. The next prime is 10142861. The reversal of 10142857 is 75824101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10055241 + 87616 = 3171^2 + 296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10142857 is a prime.

10142857 is a modest number, since divided by 142857 gives 10 as remainder.

It is equal to p₆₇₃₄₈₀ and since 10142857 and 673480 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (10142807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5071428 + 5071429.

It is an arithmetic number, because the mean of its divisors is an integer number (5071429).

Almost surely, 2^10142857 is an apocalyptic number.

It is an amenable number.

10142857 is a deficient number, since it is larger than the sum of its proper divisors (1).

10142857 is an equidigital number, since it uses as much as digits as its factorization.

10142857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 10142857 is about 3184.7852360874. The cubic root of 10142857 is about 216.4645423356.

Adding to 10142857 its reverse (75824101), we get a palindrome (85966958).

The spelling of 10142857 in words is "ten million, one hundred forty-two thousand, eight hundred fifty-seven".