128547079 has 4 divisors (see below), whose sum is σ = 129726520. Its totient is φ = 127367640.

The previous prime is 128547037. The next prime is 128547091. The reversal of 128547079 is 970745821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970745821 = 59 ⋅16453319.

It is a cyclic number.

It is not a de Polignac number, because 128547079 - 2¹⁵ = 128514311 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 (128547479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589557 + ... + 589774.

It is an arithmetic number, because the mean of its divisors is an integer number (32431630).

Almost surely, 2^128547079 is an apocalyptic number.

128547079 is a deficient number, since it is larger than the sum of its proper divisors (1179441).

128547079 is a wasteful number, since it uses less digits than its factorization.

128547079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179440.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 128547079 is about 11337.8604242599. The cubic root of 128547079 is about 504.6853956575.

The spelling of 128547079 in words is "one hundred twenty-eight million, five hundred forty-seven thousand, seventy-nine".