128227147 has 2 divisors, whose sum is σ = 128227148. Its totient is φ = 128227146.

The previous prime is 128227091. The next prime is 128227153. The reversal of 128227147 is 741722821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128227147 - 2⁷ = 128227019 is a prime.

It is not a weakly prime, because it can be changed into another prime (128227157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64113573 + 64113574.

It is an arithmetic number, because the mean of its divisors is an integer number (64113574).

Almost surely, 2^128227147 is an apocalyptic number.

128227147 is a deficient number, since it is larger than the sum of its proper divisors (1).

128227147 is an equidigital number, since it uses as much as digits as its factorization.

128227147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12544, while the sum is 34.

The square root of 128227147 is about 11323.7426233556. The cubic root of 128227147 is about 504.2663555470.

Adding to 128227147 its reverse (741722821), we get a palindrome (869949968).

The spelling of 128227147 in words is "one hundred twenty-eight million, two hundred twenty-seven thousand, one hundred forty-seven".