134947 has 2 divisors, whose sum is σ = 134948. Its totient is φ = 134946.
The previous prime is 134923. The next prime is 134951. The reversal of 134947 is 749431.
It is a strong prime.
It is an emirp because it is prime and its reverse (749431) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-134947 is a prime.
It is a Chen prime.
134947 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (134917) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67473 + 67474.
It is an arithmetic number, because the mean of its divisors is an integer number (67474).
2134947 is an apocalyptic number.
134947 is a deficient number, since it is larger than the sum of its proper divisors (1).
134947 is an equidigital number, since it uses as much as digits as its factorization.
134947 is an evil number, because the sum of its binary digits is even.
The product of its digits is 3024, while the sum is 28.
The square root of 134947 is about 367.3513304726. The cubic root of 134947 is about 51.2925642827.
It can be divided in two parts, 134 and 947, that added together give a triangular number (1081 = T46).
The spelling of 134947 in words is "one hundred thirty-four thousand, nine hundred forty-seven".
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