Base | Representation |
---|---|
bin | 1100111010110… |
… | …11111111101110 |
3 | 21112221021121100 |
4 | 12131123333232 |
5 | 210221131032 |
6 | 14430543530 |
7 | 2454134043 |
oct | 635337756 |
9 | 245837540 |
10 | 108380142 |
11 | 561a5672 |
12 | 30367ba6 |
13 | 195b8c80 |
14 | 105731ca |
15 | 97ac97c |
hex | 675bfee |
108380142 has 72 divisors (see below), whose sum is σ = 267105384. Its totient is φ = 31567968.
The previous prime is 108380119. The next prime is 108380143. The reversal of 108380142 is 241083801.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (108380143) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 83833 + ... + 85115.
It is an arithmetic number, because the mean of its divisors is an integer number (3709797).
Almost surely, 2108380142 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 108380142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133552692).
108380142 is an abundant number, since it is smaller than the sum of its proper divisors (158725242).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
108380142 is a wasteful number, since it uses less digits than its factorization.
108380142 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1342 (or 1320 counting only the distinct ones).
The product of its (nonzero) digits is 1536, while the sum is 27.
The square root of 108380142 is about 10410.5783701003. The cubic root of 108380142 is about 476.7784000273.
It can be divided in two parts, 1083 and 80142, that added together give a square (81225 = 2852).
The spelling of 108380142 in words is "one hundred eight million, three hundred eighty thousand, one hundred forty-two".
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