128702923 has 2 divisors, whose sum is σ = 128702924. Its totient is φ = 128702922.

The previous prime is 128702911. The next prime is 128702927. The reversal of 128702923 is 329207821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128702923 - 2⁵ = 128702891 is a prime.

It is not a weakly prime, because it can be changed into another prime (128702927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64351461 + 64351462.

It is an arithmetic number, because the mean of its divisors is an integer number (64351462).

Almost surely, 2^128702923 is an apocalyptic number.

128702923 is a deficient number, since it is larger than the sum of its proper divisors (1).

128702923 is an equidigital number, since it uses as much as digits as its factorization.

128702923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 128702923 is about 11344.7310677689. The cubic root of 128702923 is about 504.8892650055.

The spelling of 128702923 in words is "one hundred twenty-eight million, seven hundred two thousand, nine hundred twenty-three".