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BaseRepresentation
bin1111001010000…
…00101111001001
322212020112012201
413211000233021
5230022032412
620341040201
73102460612
oct745005711
9285215181
10127142857
1165850346
12366b6061
132045817a
1412c58c09
15b266e57
hex7940bc9

127142857 has 8 divisors (see below), whose sum is σ = 128617632. Its totient is φ = 125673600.

The previous prime is 127142797. The next prime is 127142863. The reversal of 127142857 is 758241721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127142857 - 223 = 118754249 is a prime.

It is a super-2 number, since 2×1271428572 = 32330612172244898, which contains 22 as substring.

It is a Duffinian number.

127142857 is a modest number, since divided by 142857 gives 127 as remainder.

It is not an unprimeable number, because it can be changed into a prime (127142867) 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 in 7 ways as a sum of consecutive naturals, for example, 60057 + ... + 62137.

It is an arithmetic number, because the mean of its divisors is an integer number (16077204).

Almost surely, 2127142857 is an apocalyptic number.

It is an amenable number.

127142857 is a deficient number, since it is larger than the sum of its proper divisors (1474775).

127142857 is a wasteful number, since it uses less digits than its factorization.

127142857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759.

The product of its digits is 31360, while the sum is 37.

The square root of 127142857 is about 11275.7641426202. The cubic root of 127142857 is about 502.8409698740.

The spelling of 127142857 in words is "one hundred twenty-seven million, one hundred forty-two thousand, eight hundred fifty-seven".