128058997 has 4 divisors (see below), whose sum is σ = 139700736. Its totient is φ = 116417260.

The previous prime is 128058979. The next prime is 128059003. The reversal of 128058997 is 799850821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128058997 - 2¹⁵ = 128026229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128058997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128058907) 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 3 ways as a sum of consecutive naturals, for example, 5820853 + ... + 5820874.

It is an arithmetic number, because the mean of its divisors is an integer number (34925184).

Almost surely, 2^128058997 is an apocalyptic number.

It is an amenable number.

128058997 is a deficient number, since it is larger than the sum of its proper divisors (11641739).

128058997 is a wasteful number, since it uses less digits than its factorization.

128058997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11641738.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 128058997 is about 11316.3155222890. The cubic root of 128058997 is about 504.0458367756.

The spelling of 128058997 in words is "one hundred twenty-eight million, fifty-eight thousand, nine hundred ninety-seven".