128761023 has 8 divisors (see below), whose sum is σ = 171756208. Its totient is φ = 85803264.

The previous prime is 128761013. The next prime is 128761027. The reversal of 128761023 is 320167821.

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

It is not a de Polignac number, because 128761023 - 2⁴ = 128761007 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 (128761027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15 + ... + 16047.

It is an arithmetic number, because the mean of its divisors is an integer number (21469526).

Almost surely, 2^128761023 is an apocalyptic number.

128761023 is a deficient number, since it is larger than the sum of its proper divisors (42995185).

128761023 is a wasteful number, since it uses less digits than its factorization.

128761023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18713.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 128761023 is about 11347.2914389294. The cubic root of 128761023 is about 504.9652271584.

The spelling of 128761023 in words is "one hundred twenty-eight million, seven hundred sixty-one thousand, twenty-three".