Base | Representation |
---|---|
bin | 111111110111010… |
… | …0100000011000101 |
3 | 12112100021020121101 |
4 | 1333232210003011 |
5 | 13342041201314 |
6 | 552350020101 |
7 | 104050312630 |
oct | 17756440305 |
9 | 5470236541 |
10 | 2142912709 |
11 | 9aa689043 |
12 | 4b97a7631 |
13 | 281c643b2 |
14 | 16485ac17 |
15 | c81e2174 |
hex | 7fba40c5 |
2142912709 has 8 divisors (see below), whose sum is σ = 2456771328. Its totient is φ = 1830986160.
The previous prime is 2142912703. The next prime is 2142912721. The reversal of 2142912709 is 9072192412.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2142912709 - 27 = 2142912581 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 (2142912703) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480637 + ... + 485074.
It is an arithmetic number, because the mean of its divisors is an integer number (307096416).
Almost surely, 22142912709 is an apocalyptic number.
It is an amenable number.
2142912709 is a deficient number, since it is larger than the sum of its proper divisors (313858619).
2142912709 is an equidigital number, since it uses as much as digits as its factorization.
2142912709 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 966035.
The product of its (nonzero) digits is 18144, while the sum is 37.
The square root of 2142912709 is about 46291.6051676759. The cubic root of 2142912709 is about 1289.2431329273.
The spelling of 2142912709 in words is "two billion, one hundred forty-two million, nine hundred twelve thousand, seven hundred nine".
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