128574079 has 4 divisors (see below), whose sum is σ = 129031920. Its totient is φ = 128116240.

The previous prime is 128574059. The next prime is 128574101. The reversal of 128574079 is 970475821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128574079 - 2²¹ = 126476927 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 (128574029) 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, 228499 + ... + 229060.

It is an arithmetic number, because the mean of its divisors is an integer number (32257980).

Almost surely, 2^128574079 is an apocalyptic number.

128574079 is a deficient number, since it is larger than the sum of its proper divisors (457841).

128574079 is an equidigital number, since it uses as much as digits as its factorization.

128574079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457840.

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

The square root of 128574079 is about 11339.0510625890. The cubic root of 128574079 is about 504.7207278535.

The spelling of 128574079 in words is "one hundred twenty-eight million, five hundred seventy-four thousand, seventy-nine".