98142857 has 2 divisors, whose sum is σ = 98142858. Its totient is φ = 98142856.

The previous prime is 98142851. The next prime is 98142871. The reversal of 98142857 is 75824189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76807696 + 21335161 = 8764^2 + 4619^2 .

It is a cyclic number.

It is not a de Polignac number, because 98142857 - 2²² = 93948553 is a prime.

It is a Chen prime.

98142857 is a modest number, since divided by 142857 gives 98 as remainder.

It is not a weakly prime, because it can be changed into another prime (98142851) 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, 49071428 + 49071429.

It is an arithmetic number, because the mean of its divisors is an integer number (49071429).

Almost surely, 2^98142857 is an apocalyptic number.

It is an amenable number.

98142857 is a deficient number, since it is larger than the sum of its proper divisors (1).

98142857 is an equidigital number, since it uses as much as digits as its factorization.

98142857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 44.

The square root of 98142857 is about 9906.7076771246. The cubic root of 98142857 is about 461.2675453015.

It can be divided in two parts, 98 and 142857, that multiplied together give a triangular number (13999986 = T₅₂₉₁).

The spelling of 98142857 in words is "ninety-eight million, one hundred forty-two thousand, eight hundred fifty-seven".