Base | Representation |
---|---|
bin | 10001010011010… |
… | …00001110010011 |
3 | 101010002101110112 |
4 | 20221220032103 |
5 | 244123133022 |
6 | 22222351535 |
7 | 3411405443 |
oct | 1051501623 |
9 | 333071415 |
10 | 145130387 |
11 | 74a16676 |
12 | 4072b5ab |
13 | 240b558c |
14 | 153bc123 |
15 | cb1b8e2 |
hex | 8a68393 |
145130387 has 2 divisors, whose sum is σ = 145130388. Its totient is φ = 145130386.
The previous prime is 145130371. The next prime is 145130423. The reversal of 145130387 is 783031541.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 145130387 - 24 = 145130371 is a prime.
It is a Chen prime.
It is equal to p8185523 and since 145130387 and 8185523 have the same sum of digits, it is a Honaker prime.
It is not a weakly prime, because it can be changed into another prime (145120387) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72565193 + 72565194.
It is an arithmetic number, because the mean of its divisors is an integer number (72565194).
Almost surely, 2145130387 is an apocalyptic number.
145130387 is a deficient number, since it is larger than the sum of its proper divisors (1).
145130387 is an equidigital number, since it uses as much as digits as its factorization.
145130387 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 10080, while the sum is 32.
The square root of 145130387 is about 12047.0073877291. The cubic root of 145130387 is about 525.5162112361.
The spelling of 145130387 in words is "one hundred forty-five million, one hundred thirty thousand, three hundred eighty-seven".
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