128957119 has 2 divisors, whose sum is σ = 128957120. Its totient is φ = 128957118.

The previous prime is 128957107. The next prime is 128957167. The reversal of 128957119 is 911759821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128957119 is a prime.

It is a super-2 number, since 2×128957119² = 33259877081560322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128957219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64478559 + 64478560.

It is an arithmetic number, because the mean of its divisors is an integer number (64478560).

Almost surely, 2^128957119 is an apocalyptic number.

128957119 is a deficient number, since it is larger than the sum of its proper divisors (1).

128957119 is an equidigital number, since it uses as much as digits as its factorization.

128957119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 43.

The square root of 128957119 is about 11355.9288039332. The cubic root of 128957119 is about 505.2214419486.

The spelling of 128957119 in words is "one hundred twenty-eight million, nine hundred fifty-seven thousand, one hundred nineteen".