Search a number
BaseRepresentation
bin11111010011001011
320111212021
4133103023
513100303
62425311
71042525
oct372313
9214767
10128203
1188359
1262237
134647a
1434a15
1527ebd
hex1f4cb

128203 has 2 divisors, whose sum is σ = 128204. Its totient is φ = 128202.

The previous prime is 128201. The next prime is 128213. The reversal of 128203 is 302821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128203 - 21 = 128201 is a prime.

Together with 128201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (128201) 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, 64101 + 64102.

It is an arithmetic number, because the mean of its divisors is an integer number (64102).

2128203 is an apocalyptic number.

128203 is a deficient number, since it is larger than the sum of its proper divisors (1).

128203 is an equidigital number, since it uses as much as digits as its factorization.

128203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 128203 is about 358.0544651307. The cubic root of 128203 is about 50.4234700045.

The spelling of 128203 in words is "one hundred twenty-eight thousand, two hundred three".