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102008143 = 176000479
BaseRepresentation
bin1100001010010…
…00010101001111
321002221112212101
412011020111033
5202103230033
614042215531
72346024556
oct605102517
9232845771
10102008143
1152643256
122a1b45a7
1318197863
14d794d9d
158e4e97d
hex614854f

102008143 has 4 divisors (see below), whose sum is σ = 108008640. Its totient is φ = 96007648.

The previous prime is 102008141. The next prime is 102008191. The reversal of 102008143 is 341800201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102008143 - 21 = 102008141 is a prime.

It is a super-2 number, since 2×1020081432 = 20811322476616898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102008143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102008141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000223 + ... + 3000256.

It is an arithmetic number, because the mean of its divisors is an integer number (27002160).

Almost surely, 2102008143 is an apocalyptic number.

102008143 is a deficient number, since it is larger than the sum of its proper divisors (6000497).

102008143 is an equidigital number, since it uses as much as digits as its factorization.

102008143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000496.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 102008143 is about 10099.9080688885. The cubic root of 102008143 is about 467.2453060906.

Adding to 102008143 its reverse (341800201), we get a palindrome (443808344).

The spelling of 102008143 in words is "one hundred two million, eight thousand, one hundred forty-three".

Divisors: 1 17 6000479 102008143