128942353 has 2 divisors, whose sum is σ = 128942354. Its totient is φ = 128942352.

The previous prime is 128942339. The next prime is 128942419. The reversal of 128942353 is 353249821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95902849 + 33039504 = 9793^2 + 5748^2 .

It is an emirp because it is prime and its reverse (353249821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128942353 - 2¹⁷ = 128811281 is a prime.

It is a super-2 number, since 2×128942353² = 33252260794353218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128942453) 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, 64471176 + 64471177.

It is an arithmetic number, because the mean of its divisors is an integer number (64471177).

Almost surely, 2^128942353 is an apocalyptic number.

It is an amenable number.

128942353 is a deficient number, since it is larger than the sum of its proper divisors (1).

128942353 is an equidigital number, since it uses as much as digits as its factorization.

128942353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 128942353 is about 11355.2786403505. The cubic root of 128942353 is about 505.2021580589.

The spelling of 128942353 in words is "one hundred twenty-eight million, nine hundred forty-two thousand, three hundred fifty-three".