128741277 has 16 divisors (see below), whose sum is σ = 200182400. Its totient is φ = 73565856.

The previous prime is 128741251. The next prime is 128741279. The reversal of 128741277 is 772147821.

It is not a de Polignac number, because 128741277 - 2⁸ = 128741021 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 (128741279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61528 + ... + 63585.

It is an arithmetic number, because the mean of its divisors is an integer number (12511400).

Almost surely, 2^128741277 is an apocalyptic number.

It is an amenable number.

128741277 is a deficient number, since it is larger than the sum of its proper divisors (71441123).

128741277 is an equidigital number, since it uses as much as digits as its factorization.

128741277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125137 (or 125123 counting only the distinct ones).

The product of its digits is 43904, while the sum is 39.

The square root of 128741277 is about 11346.4213300935. The cubic root of 128741277 is about 504.9394130497.

The spelling of 128741277 in words is "one hundred twenty-eight million, seven hundred forty-one thousand, two hundred seventy-seven".