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80138127 = 326712709
BaseRepresentation
bin1001100011011…
…00111110001111
312120210102211210
410301230332033
5131003410002
611541345503
71662106566
oct461547617
9176712753
1080138127
1141265a63
1222a08293
13137ab214
14a900bdd
15707e96c
hex4c6cf8f

80138127 has 4 divisors (see below), whose sum is σ = 106850840. Its totient is φ = 53425416.

The previous prime is 80138117. The next prime is 80138161. The reversal of 80138127 is 72183108.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 80138127 - 26 = 80138063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80138094 and 80138103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80138117) 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, 13356352 + ... + 13356357.

It is an arithmetic number, because the mean of its divisors is an integer number (26712710).

Almost surely, 280138127 is an apocalyptic number.

80138127 is a deficient number, since it is larger than the sum of its proper divisors (26712713).

80138127 is a wasteful number, since it uses less digits than its factorization.

80138127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26712712.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 80138127 is about 8951.9901139356. The cubic root of 80138127 is about 431.1347834192.

The spelling of 80138127 in words is "eighty million, one hundred thirty-eight thousand, one hundred twenty-seven".

Divisors: 1 3 26712709 80138127