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128341 is a prime number
BaseRepresentation
bin11111010101010101
320112001101
4133111111
513101331
62430101
71043113
oct372525
9215041
10128341
1188474
1262331
1346555
1434ab3
1528061
hex1f555

128341 has 2 divisors, whose sum is σ = 128342. Its totient is φ = 128340.

The previous prime is 128339. The next prime is 128347. The reversal of 128341 is 143821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125316 + 3025 = 354^2 + 55^2 .

It is an emirp because it is prime and its reverse (143821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128341 - 21 = 128339 is a prime.

Together with 128339, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128347) 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 as a sum of consecutive naturals, namely, 64170 + 64171.

It is an arithmetic number, because the mean of its divisors is an integer number (64171).

2128341 is an apocalyptic number.

It is an amenable number.

128341 is a deficient number, since it is larger than the sum of its proper divisors (1).

128341 is an equidigital number, since it uses as much as digits as its factorization.

128341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 128341 is about 358.2471214120. The cubic root of 128341 is about 50.4415557581.

The spelling of 128341 in words is "one hundred twenty-eight thousand, three hundred forty-one".