128742803 has 24 divisors (see below), whose sum is σ = 160542720. Its totient is φ = 100850400.

The previous prime is 128742797. The next prime is 128742811. The reversal of 128742803 is 308247821.

It is not a de Polignac number, because 128742803 - 2⁴ = 128742787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128742403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111278 + ... + 112428.

It is an arithmetic number, because the mean of its divisors is an integer number (6689280).

Almost surely, 2^128742803 is an apocalyptic number.

128742803 is a deficient number, since it is larger than the sum of its proper divisors (31799917).

128742803 is a wasteful number, since it uses less digits than its factorization.

128742803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 128742803 is about 11346.4885757665. The cubic root of 128742803 is about 504.9414080962.

The spelling of 128742803 in words is "one hundred twenty-eight million, seven hundred forty-two thousand, eight hundred three".