128903 has 2 divisors, whose sum is σ = 128904. Its totient is φ = 128902.

The previous prime is 128879. The next prime is 128923. The reversal of 128903 is 309821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128903 - 2¹⁶ = 63367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64451 + 64452.

It is an arithmetic number, because the mean of its divisors is an integer number (64452).

2¹²⁸⁹⁰³ is an apocalyptic number.

128903 is a deficient number, since it is larger than the sum of its proper divisors (1).

128903 is an equidigital number, since it uses as much as digits as its factorization.

128903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 128903 is about 359.0306393610. The cubic root of 128903 is about 50.5150757199.

The spelling of 128903 in words is "one hundred twenty-eight thousand, nine hundred three".