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164143 = 7131179
BaseRepresentation
bin101000000100101111
322100011101
4220010233
520223033
63303531
71252360
oct500457
9270141
10164143
11102361
127aba7
1359935
1443b67
153397d
hex2812f

164143 has 8 divisors (see below), whose sum is σ = 190080. Its totient is φ = 138840.

The previous prime is 164117. The next prime is 164147. The reversal of 164143 is 341461.

It is a happy number.

164143 is nontrivially palindromic in base 12.

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 164143 - 217 = 33071 is a prime.

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 164143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (23760).

2164143 is an apocalyptic number.

164143 is a deficient number, since it is larger than the sum of its proper divisors (25937).

164143 is a wasteful number, since it uses less digits than its factorization.

164143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its digits is 288, while the sum is 19.

The square root of 164143 is about 405.1456528213. The cubic root of 164143 is about 54.7529414681.

The spelling of 164143 in words is "one hundred sixty-four thousand, one hundred forty-three".

Divisors: 1 7 131 179 917 1253 23449 164143