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70143 = 3103227
BaseRepresentation
bin10001000111111111
310120012220
4101013333
54221033
61300423
7411333
oct210777
9116186
1070143
1148777
1234713
1325c08
141b7c3
1515bb3
hex111ff

70143 has 8 divisors (see below), whose sum is σ = 94848. Its totient is φ = 46104.

The previous prime is 70141. The next prime is 70157. The reversal of 70143 is 34107.

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

It is not a de Polignac number, because 70143 - 21 = 70141 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 70143.

It is not an unprimeable number, because it can be changed into a prime (70141) 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, 196 + ... + 422.

It is an arithmetic number, because the mean of its divisors is an integer number (11856).

270143 is an apocalyptic number.

70143 is a deficient number, since it is larger than the sum of its proper divisors (24705).

70143 is a wasteful number, since it uses less digits than its factorization.

70143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 70143 is about 264.8452378277. The cubic root of 70143 is about 41.2408978999.

The spelling of 70143 in words is "seventy thousand, one hundred forty-three", and thus it is an iban number.

Divisors: 1 3 103 227 309 681 23381 70143