Search a number
-
+
12711043 = 53239831
BaseRepresentation
bin110000011111…
…010010000011
3212220210021101
4300133102003
511223223133
61132235231
7213020302
oct60372203
925823241
1012711043
1171a1aa4
12430bb17
132830837
14198c439
1511b137d
hexc1f483

12711043 has 4 divisors (see below), whose sum is σ = 12950928. Its totient is φ = 12471160.

The previous prime is 12711037. The next prime is 12711067. The reversal of 12711043 is 34011721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34011721 = 167203663.

It is a cyclic number.

It is not a de Polignac number, because 12711043 - 25 = 12711011 is a prime.

It is a super-2 number, since 2×127110432 = 323141228295698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12711043.

It is not an unprimeable number, because it can be changed into a prime (12711143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119863 + ... + 119968.

It is an arithmetic number, because the mean of its divisors is an integer number (3237732).

Almost surely, 212711043 is an apocalyptic number.

12711043 is a deficient number, since it is larger than the sum of its proper divisors (239885).

12711043 is an equidigital number, since it uses as much as digits as its factorization.

12711043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239884.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 12711043 is about 3565.2549698444. The cubic root of 12711043 is about 233.3782591499.

Adding to 12711043 its reverse (34011721), we get a palindrome (46722764).

The spelling of 12711043 in words is "twelve million, seven hundred eleven thousand, forty-three".

Divisors: 1 53 239831 12711043