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71141 = 710163
BaseRepresentation
bin10001010111100101
310121120212
4101113211
54234031
61305205
7414260
oct212745
9117525
1071141
11494a4
1235205
13264c5
141bcd7
151612b
hex115e5

71141 has 4 divisors (see below), whose sum is σ = 81312. Its totient is φ = 60972.

The previous prime is 71129. The next prime is 71143. The reversal of 71141 is 14117.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14117 = 19743.

It is a cyclic number.

It is not a de Polignac number, because 71141 - 210 = 70117 is a prime.

It is a super-2 number, since 2×711412 = 10122083762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71143) 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, 5075 + ... + 5088.

It is an arithmetic number, because the mean of its divisors is an integer number (20328).

271141 is an apocalyptic number.

It is an amenable number.

71141 is a deficient number, since it is larger than the sum of its proper divisors (10171).

71141 is a wasteful number, since it uses less digits than its factorization.

71141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170.

The product of its digits is 28, while the sum is 14.

The square root of 71141 is about 266.7227024458. The cubic root of 71141 is about 41.4355704160.

Adding to 71141 its reverse (14117), we get a palindrome (85258).

It can be divided in two parts, 71 and 141, that multiplied together give a triangular number (10011 = T141).

The spelling of 71141 in words is "seventy-one thousand, one hundred forty-one", and thus it is an iban number.

Divisors: 1 7 10163 71141