128226743 has 2 divisors, whose sum is σ = 128226744. Its totient is φ = 128226742.

The previous prime is 128226737. The next prime is 128226773. The reversal of 128226743 is 347622821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128226743 - 2¹⁴ = 128210359 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128226773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64113371 + 64113372.

It is an arithmetic number, because the mean of its divisors is an integer number (64113372).

Almost surely, 2^128226743 is an apocalyptic number.

128226743 is a deficient number, since it is larger than the sum of its proper divisors (1).

128226743 is an equidigital number, since it uses as much as digits as its factorization.

128226743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 128226743 is about 11323.7247847164. The cubic root of 128226743 is about 504.2658259560.

The spelling of 128226743 in words is "one hundred twenty-eight million, two hundred twenty-six thousand, seven hundred forty-three".