Base | Representation |
---|---|
bin | 10001000110111… |
… | …11001010000101 |
3 | 101000001120221222 |
4 | 20203133022011 |
5 | 243220123024 |
6 | 22124050125 |
7 | 3361621535 |
oct | 1043371205 |
9 | 330046858 |
10 | 143520389 |
11 | 74016aa1 |
12 | 40093945 |
13 | 2397080c |
14 | 150bd4c5 |
15 | c8ee85e |
hex | 88df285 |
143520389 has 2 divisors, whose sum is σ = 143520390. Its totient is φ = 143520388.
The previous prime is 143520367. The next prime is 143520401. The reversal of 143520389 is 983025341.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 86397025 + 57123364 = 9295^2 + 7558^2 .
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-143520389 is a prime.
It is a super-2 number, since 2×1435203892 = 41196204117422642, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (143520089) by changing a digit.
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 as a sum of consecutive naturals, namely, 71760194 + 71760195.
It is an arithmetic number, because the mean of its divisors is an integer number (71760195).
Almost surely, 2143520389 is an apocalyptic number.
It is an amenable number.
143520389 is a deficient number, since it is larger than the sum of its proper divisors (1).
143520389 is an equidigital number, since it uses as much as digits as its factorization.
143520389 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 25920, while the sum is 35.
The square root of 143520389 is about 11979.9995409015. Note that the first 3 decimals coincide. The cubic root of 143520389 is about 523.5657165951.
The spelling of 143520389 in words is "one hundred forty-three million, five hundred twenty thousand, three hundred eighty-nine".
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