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102871429 = 1012773677
BaseRepresentation
bin1100010000110…
…11000110000101
321011120102001221
412020123012011
5202313341204
614112520341
72356251463
oct610330605
9234512057
10102871429
1153082911
122a5500b1
131840a78b
14d93b833
159070654
hex621b185

102871429 has 8 divisors (see below), whose sum is σ = 104293368. Its totient is φ = 101457600.

The previous prime is 102871427. The next prime is 102871441. The reversal of 102871429 is 924178201.

It can be written as a sum of positive squares in 4 ways, for example, as 39350529 + 63520900 = 6273^2 + 7970^2 .

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 102871429 - 21 = 102871427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102871394 and 102871403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102871427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26139 + ... + 29815.

It is an arithmetic number, because the mean of its divisors is an integer number (13036671).

Almost surely, 2102871429 is an apocalyptic number.

It is an amenable number.

102871429 is a deficient number, since it is larger than the sum of its proper divisors (1421939).

102871429 is a wasteful number, since it uses less digits than its factorization.

102871429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 102871429 is about 10142.5553486289. Note that the first 3 decimals coincide. The cubic root of 102871429 is about 468.5596905920.

The spelling of 102871429 in words is "one hundred two million, eight hundred seventy-one thousand, four hundred twenty-nine".

Divisors: 1 101 277 3677 27977 371377 1018529 102871429