128207743 has 2 divisors, whose sum is σ = 128207744. Its totient is φ = 128207742.

The previous prime is 128207719. The next prime is 128207749. The reversal of 128207743 is 347702821.

It is a strong prime.

It is an emirp because it is prime and its reverse (347702821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128207743 - 2¹³ = 128199551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128207699 and 128207708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128207749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64103871 + 64103872.

It is an arithmetic number, because the mean of its divisors is an integer number (64103872).

Almost surely, 2^128207743 is an apocalyptic number.

128207743 is a deficient number, since it is larger than the sum of its proper divisors (1).

128207743 is an equidigital number, since it uses as much as digits as its factorization.

128207743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 128207743 is about 11322.8858070723. The cubic root of 128207743 is about 504.2409181930.

The spelling of 128207743 in words is "one hundred twenty-eight million, two hundred seven thousand, seven hundred forty-three".