128232743 has 2 divisors, whose sum is σ = 128232744. Its totient is φ = 128232742.

The previous prime is 128232737. The next prime is 128232781. The reversal of 128232743 is 347232821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128232743 - 2⁶ = 128232679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128237743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64116371 + 64116372.

It is an arithmetic number, because the mean of its divisors is an integer number (64116372).

Almost surely, 2^128232743 is an apocalyptic number.

128232743 is a deficient number, since it is larger than the sum of its proper divisors (1).

128232743 is an equidigital number, since it uses as much as digits as its factorization.

128232743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 32.

The square root of 128232743 is about 11323.9897121112. The cubic root of 128232743 is about 504.2736910541.

The spelling of 128232743 in words is "one hundred twenty-eight million, two hundred thirty-two thousand, seven hundred forty-three".