128201167 has 4 divisors (see below), whose sum is σ = 128274696. Its totient is φ = 128127640.

The previous prime is 128201153. The next prime is 128201237. The reversal of 128201167 is 761102821.

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 128201167 - 2¹¹ = 128199119 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 (128201147) 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, 34084 + ... + 37657.

It is an arithmetic number, because the mean of its divisors is an integer number (32068674).

Almost surely, 2^128201167 is an apocalyptic number.

128201167 is a deficient number, since it is larger than the sum of its proper divisors (73529).

128201167 is an equidigital number, since it uses as much as digits as its factorization.

128201167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73528.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 128201167 is about 11322.5954180126. The cubic root of 128201167 is about 504.2322969119.

Adding to 128201167 its reverse (761102821), we get a palindrome (889303988).

It can be divided in two parts, 128 and 201167, that added together give a triangular number (201295 = T₆₃₄).

The spelling of 128201167 in words is "one hundred twenty-eight million, two hundred one thousand, one hundred sixty-seven".