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13407143 = 71188833
BaseRepresentation
bin110011001001…
…001110100111
3221020011010212
4303021032213
511413012033
61155210035
7221646611
oct63111647
927204125
1013407143
117627a92
1245a691b
132a15629
141acddb1
15129c748
hexcc93a7

13407143 has 4 divisors (see below), whose sum is σ = 13596048. Its totient is φ = 13218240.

The previous prime is 13407133. The next prime is 13407157. The reversal of 13407143 is 34170431.

13407143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34170431 = 61560171.

It is a cyclic number.

It is not a de Polignac number, because 13407143 - 210 = 13406119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13407133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94346 + ... + 94487.

It is an arithmetic number, because the mean of its divisors is an integer number (3399012).

Almost surely, 213407143 is an apocalyptic number.

13407143 is a deficient number, since it is larger than the sum of its proper divisors (188905).

13407143 is an equidigital number, since it uses as much as digits as its factorization.

13407143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188904.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 13407143 is about 3661.5765730079. The cubic root of 13407143 is about 237.5629705602.

Adding to 13407143 its reverse (34170431), we get a palindrome (47577574).

The spelling of 13407143 in words is "thirteen million, four hundred seven thousand, one hundred forty-three".

Divisors: 1 71 188833 13407143