103142857 has 2 divisors, whose sum is σ = 103142858. Its totient is φ = 103142856.

The previous prime is 103142813. The next prime is 103142869. The reversal of 103142857 is 758241301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70241161 + 32901696 = 8381^2 + 5736^2 .

It is an emirp because it is prime and its reverse (758241301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103142857 is a prime.

103142857 is a modest number, since divided by 142857 gives 103 as remainder.

It is not a weakly prime, because it can be changed into another prime (103142807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51571428 + 51571429.

It is an arithmetic number, because the mean of its divisors is an integer number (51571429).

Almost surely, 2^103142857 is an apocalyptic number.

It is an amenable number.

103142857 is a deficient number, since it is larger than the sum of its proper divisors (1).

103142857 is an equidigital number, since it uses as much as digits as its factorization.

103142857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 103142857 is about 10155.9271856389. The cubic root of 103142857 is about 468.9714295588.

The spelling of 103142857 in words is "one hundred three million, one hundred forty-two thousand, eight hundred fifty-seven".