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9102143 = 29279137
BaseRepresentation
bin100010101110…
…001100111111
3122010102210102
4202232030333
54312232033
6523031315
7140236601
oct42561477
918112712
109102143
115157636
12306b53b
131b68cab
1412cd171
15bebde8
hex8ae33f

9102143 has 12 divisors (see below), whose sum is σ = 9615840. Its totient is φ = 8613696.

The previous prime is 9102139. The next prime is 9102179. The reversal of 9102143 is 3412019.

9102143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9102143 - 22 = 9102139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9102193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66371 + ... + 66507.

It is an arithmetic number, because the mean of its divisors is an integer number (801320).

Almost surely, 29102143 is an apocalyptic number.

9102143 is a deficient number, since it is larger than the sum of its proper divisors (513697).

9102143 is a wasteful number, since it uses less digits than its factorization.

9102143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 9102143 is about 3016.9758036816. The cubic root of 9102143 is about 208.7923351096.

The spelling of 9102143 in words is "nine million, one hundred two thousand, one hundred forty-three".

Divisors: 1 29 79 137 841 2291 3973 10823 66439 115217 313867 9102143