128943077 has 8 divisors (see below), whose sum is σ = 133539840. Its totient is φ = 124356400.

The previous prime is 128943071. The next prime is 128943091. The reversal of 128943077 is 770349821.

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

It is a cyclic number.

It is not a de Polignac number, because 128943077 - 2¹⁸ = 128680933 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 (128943071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31448 + ... + 35310.

It is an arithmetic number, because the mean of its divisors is an integer number (16692480).

Almost surely, 2^128943077 is an apocalyptic number.

It is an amenable number.

128943077 is a deficient number, since it is larger than the sum of its proper divisors (4596763).

128943077 is a wasteful number, since it uses less digits than its factorization.

128943077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 128943077 is about 11355.3105197524. The cubic root of 128943077 is about 505.2031036124.

The spelling of 128943077 in words is "one hundred twenty-eight million, nine hundred forty-three thousand, seventy-seven".