128241679 has 6 divisors (see below), whose sum is σ = 129275664. Its totient is φ = 127215900.

The previous prime is 128241677. The next prime is 128241689. The reversal of 128241679 is 976142821.

It is not a de Polignac number, because 128241679 - 2¹ = 128241677 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 (128241671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12154 + ... + 20104.

It is an arithmetic number, because the mean of its divisors is an integer number (21545944).

Almost surely, 2^128241679 is an apocalyptic number.

128241679 is a deficient number, since it is larger than the sum of its proper divisors (1033985).

128241679 is an frugal number, since it uses more digits than its factorization.

128241679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205 (or 8078 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 128241679 is about 11324.3842658221. The cubic root of 128241679 is about 504.2854043522.

The spelling of 128241679 in words is "one hundred twenty-eight million, two hundred forty-one thousand, six hundred seventy-nine".