128224451 has 2 divisors, whose sum is σ = 128224452. Its totient is φ = 128224450.

The previous prime is 128224441. The next prime is 128224511. The reversal of 128224451 is 154422821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128224451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128224441) 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 as a sum of consecutive naturals, namely, 64112225 + 64112226.

It is an arithmetic number, because the mean of its divisors is an integer number (64112226).

Almost surely, 2^128224451 is an apocalyptic number.

128224451 is a deficient number, since it is larger than the sum of its proper divisors (1).

128224451 is an equidigital number, since it uses as much as digits as its factorization.

128224451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 29.

The square root of 128224451 is about 11323.6235808155. The cubic root of 128224451 is about 504.2628214237.

The spelling of 128224451 in words is "one hundred twenty-eight million, two hundred twenty-four thousand, four hundred fifty-one".