128959751 has 2 divisors, whose sum is σ = 128959752. Its totient is φ = 128959750.

The previous prime is 128959711. The next prime is 128959769. The reversal of 128959751 is 157959821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128959751 - 2¹⁸ = 128697607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128959696 and 128959705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128959711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64479875 + 64479876.

It is an arithmetic number, because the mean of its divisors is an integer number (64479876).

Almost surely, 2^128959751 is an apocalyptic number.

128959751 is a deficient number, since it is larger than the sum of its proper divisors (1).

128959751 is an equidigital number, since it uses as much as digits as its factorization.

128959751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 47.

The square root of 128959751 is about 11356.0446899438. The cubic root of 128959751 is about 505.2248790957.

The spelling of 128959751 in words is "one hundred twenty-eight million, nine hundred fifty-nine thousand, seven hundred fifty-one".