128000923 has 2 divisors, whose sum is σ = 128000924. Its totient is φ = 128000922.

The previous prime is 128000903. The next prime is 128000927. The reversal of 128000923 is 329000821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128000923 - 2¹⁷ = 127869851 is a prime.

It is equal to p_7271080 and since 128000923 and 7271080 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (128000927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64000461 + 64000462.

It is an arithmetic number, because the mean of its divisors is an integer number (64000462).

Almost surely, 2^128000923 is an apocalyptic number.

128000923 is a deficient number, since it is larger than the sum of its proper divisors (1).

128000923 is an equidigital number, since it uses as much as digits as its factorization.

128000923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 128000923 is about 11313.7492901337. The cubic root of 128000923 is about 503.9696313166.

The spelling of 128000923 in words is "one hundred twenty-eight million, nine hundred twenty-three", and thus it is an aban number.