128002801 has 4 divisors (see below), whose sum is σ = 130172400. Its totient is φ = 125833204.

The previous prime is 128002793. The next prime is 128002807. The reversal of 128002801 is 108200821.

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 128002801 - 2³ = 128002793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128002807) 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, 1084711 + ... + 1084828.

It is an arithmetic number, because the mean of its divisors is an integer number (32543100).

Almost surely, 2^128002801 is an apocalyptic number.

It is an amenable number.

128002801 is a deficient number, since it is larger than the sum of its proper divisors (2169599).

128002801 is an equidigital number, since it uses as much as digits as its factorization.

128002801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169598.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 128002801 is about 11313.8322861884. The cubic root of 128002801 is about 503.9720960133.

The spelling of 128002801 in words is "one hundred twenty-eight million, two thousand, eight hundred one".