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143128132 = 2275111719
BaseRepresentation
bin10001000011111…
…11011001000100
3100222022122212221
420201333121010
5243120100012
622111422124
73355366120
oct1041773104
9328278787
10143128132
1173879314
123bb24944
1323864104
141501a580
15c873507
hex887f644

143128132 has 12 divisors (see below), whose sum is σ = 286256320. Its totient is φ = 61340616.

The previous prime is 143128129. The next prime is 143128157. The reversal of 143128132 is 231821341.

It is a happy number.

143128132 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 143128097 and 143128106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555832 + ... + 2555887.

Almost surely, 2143128132 is an apocalyptic number.

It is an amenable number.

143128132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143128132 is a wasteful number, since it uses less digits than its factorization.

143128132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111730 (or 5111728 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 143128132 is about 11963.6170115898. The cubic root of 143128132 is about 523.0882938283.

Adding to 143128132 its reverse (231821341), we get a palindrome (374949473).

The spelling of 143128132 in words is "one hundred forty-three million, one hundred twenty-eight thousand, one hundred thirty-two".

Divisors: 1 2 4 7 14 28 5111719 10223438 20446876 35782033 71564066 143128132