128203006 has 4 divisors (see below), whose sum is σ = 192304512. Its totient is φ = 64101502.

The previous prime is 128203003. The next prime is 128203021. The reversal of 128203006 is 600302821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 600302821 = 269 ⋅2231609.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128203003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32050750 + ... + 32050753.

It is an arithmetic number, because the mean of its divisors is an integer number (48076128).

Almost surely, 2^128203006 is an apocalyptic number.

128203006 is a deficient number, since it is larger than the sum of its proper divisors (64101506).

128203006 is an equidigital number, since it uses as much as digits as its factorization.

128203006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64101505.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 128203006 is about 11322.6766270171. The cubic root of 128203006 is about 504.2347079112.

Adding to 128203006 its reverse (600302821), we get a palindrome (728505827).

The spelling of 128203006 in words is "one hundred twenty-eight million, two hundred three thousand, six".