128473 has 2 divisors, whose sum is σ = 128474. Its totient is φ = 128472.

The previous prime is 128467. The next prime is 128477. The reversal of 128473 is 374821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127449 + 1024 = 357^2 + 32^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128473 is a prime.

It is not a weakly prime, because it can be changed into another prime (128477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64236 + 64237.

It is an arithmetic number, because the mean of its divisors is an integer number (64237).

2¹²⁸⁴⁷³ is an apocalyptic number.

It is an amenable number.

128473 is a deficient number, since it is larger than the sum of its proper divisors (1).

128473 is an equidigital number, since it uses as much as digits as its factorization.

128473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 25.

The square root of 128473 is about 358.4313044364. The cubic root of 128473 is about 50.4588430474.

The spelling of 128473 in words is "one hundred twenty-eight thousand, four hundred seventy-three".