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142175163 = 31310093613
BaseRepresentation
bin10000111100101…
…10101110111011
3100220112020122210
420132112232323
5242344101123
622035150203
73344316564
oct1036265673
9326466583
10142175163
1173288339
123b745363
13235bc420
1414c4d16b
15c735e93
hex8796bbb

142175163 has 16 divisors (see below), whose sum is σ = 204407840. Its totient is φ = 87381504.

The previous prime is 142175161. The next prime is 142175171. The reversal of 142175163 is 361571241.

It is not a de Polignac number, because 142175163 - 21 = 142175161 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 142175163.

It is not an unprimeable number, because it can be changed into a prime (142175161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37545 + ... + 41157.

It is an arithmetic number, because the mean of its divisors is an integer number (12775490).

Almost surely, 2142175163 is an apocalyptic number.

142175163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142175163 is a deficient number, since it is larger than the sum of its proper divisors (62232677).

142175163 is a wasteful number, since it uses less digits than its factorization.

142175163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638.

The product of its digits is 5040, while the sum is 30.

The square root of 142175163 is about 11923.7226988890. The cubic root of 142175163 is about 521.9247737340.

The spelling of 142175163 in words is "one hundred forty-two million, one hundred seventy-five thousand, one hundred sixty-three".

Divisors: 1 3 13 39 1009 3027 3613 10839 13117 39351 46969 140907 3645517 10936551 47391721 142175163