Base | Representation |
---|---|
bin | 110001000111… |
… | …010101110111 |
3 | 220020010100120 |
4 | 301013111313 |
5 | 11244001002 |
6 | 1135543023 |
7 | 214302546 |
oct | 61072567 |
9 | 26203316 |
10 | 12875127 |
11 | 72a4301 |
12 | 438aa73 |
13 | 288a425 |
14 | 19d215d |
15 | 11e4cbc |
hex | c47577 |
12875127 has 4 divisors (see below), whose sum is σ = 17166840. Its totient is φ = 8583416.
The previous prime is 12875113. The next prime is 12875129. The reversal of 12875127 is 72157821.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72157821 = 3 ⋅24052607.
It is a cyclic number.
It is not a de Polignac number, because 12875127 - 24 = 12875111 is a prime.
It is a super-2 number, since 2×128751272 = 331537790532258, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12875129) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145852 + ... + 2145857.
It is an arithmetic number, because the mean of its divisors is an integer number (4291710).
Almost surely, 212875127 is an apocalyptic number.
12875127 is a deficient number, since it is larger than the sum of its proper divisors (4291713).
12875127 is an equidigital number, since it uses as much as digits as its factorization.
12875127 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4291712.
The product of its digits is 7840, while the sum is 33.
The square root of 12875127 is about 3588.1927205768. The cubic root of 12875127 is about 234.3781780191.
It can be divided in two parts, 128751 and 27, that added together give a triangular number (128778 = T507).
The spelling of 12875127 in words is "twelve million, eight hundred seventy-five thousand, one hundred twenty-seven".
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