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142278108 = 22376127767
BaseRepresentation
bin10000111101011…
…11110111011100
3100220201110212120
420132233313130
5242410344413
622041302540
73345225660
oct1036576734
9326643776
10142278108
1173348715
123b794a50
132362723b
1414c788a0
15c756723
hex87afddc

142278108 has 48 divisors (see below), whose sum is σ = 385641984. Its totient is φ = 39983040.

The previous prime is 142278091. The next prime is 142278109. The reversal of 142278108 is 801872241.

It is a happy number.

142278108 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142278109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8760 + ... + 19007.

It is an arithmetic number, because the mean of its divisors is an integer number (8034208).

Almost surely, 2142278108 is an apocalyptic number.

It is an amenable number.

142278108 is an abundant number, since it is smaller than the sum of its proper divisors (243363876).

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

142278108 is a wasteful number, since it uses less digits than its factorization.

142278108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27842 (or 27840 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 142278108 is about 11928.0387323315. The cubic root of 142278108 is about 522.0507136472.

The spelling of 142278108 in words is "one hundred forty-two million, two hundred seventy-eight thousand, one hundred eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 61 84 122 183 244 366 427 732 854 1281 1708 2562 5124 27767 55534 83301 111068 166602 194369 333204 388738 583107 777476 1166214 1693787 2332428 3387574 5081361 6775148 10162722 11856509 20325444 23713018 35569527 47426036 71139054 142278108