128780103 has 8 divisors (see below), whose sum is σ = 174059248. Its totient is φ = 84677184.

The previous prime is 128780101. The next prime is 128780129. The reversal of 128780103 is 301087821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128780103 - 2¹ = 128780101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128780101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293800 + ... + 294237.

It is an arithmetic number, because the mean of its divisors is an integer number (21757406).

Almost surely, 2^128780103 is an apocalyptic number.

128780103 is a deficient number, since it is larger than the sum of its proper divisors (45279145).

128780103 is an equidigital number, since it uses as much as digits as its factorization.

128780103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588113.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 128780103 is about 11348.1321370523. The cubic root of 128780103 is about 504.9901680927.

The spelling of 128780103 in words is "one hundred twenty-eight million, seven hundred eighty thousand, one hundred three".