Base | Representation |
---|---|
bin | 10010101111110110… |
… | …011001011110010110 |
3 | 1220221220102011122121 |
4 | 102233312121132112 |
5 | 312211304021402 |
6 | 13125254450154 |
7 | 1311562245640 |
oct | 225766313626 |
9 | 56856364577 |
10 | 20130142102 |
11 | 859aa38784 |
12 | 3a9966395a |
13 | 1b8a642cb5 |
14 | d8d6c1890 |
15 | 7cc3c6837 |
hex | 4afd99796 |
20130142102 has 32 divisors (see below), whose sum is σ = 36582658560. Its totient is φ = 8109962880.
The previous prime is 20130142079. The next prime is 20130142141. The reversal of 20130142102 is 20124103102.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149277 + ... + 250087.
It is an arithmetic number, because the mean of its divisors is an integer number (1143208080).
Almost surely, 220130142102 is an apocalyptic number.
20130142102 is a deficient number, since it is larger than the sum of its proper divisors (16452516458).
20130142102 is a wasteful number, since it uses less digits than its factorization.
20130142102 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 101676.
The product of its (nonzero) digits is 96, while the sum is 16.
Adding to 20130142102 its reverse (20124103102), we get a palindrome (40254245204).
The spelling of 20130142102 in words is "twenty billion, one hundred thirty million, one hundred forty-two thousand, one hundred two".
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