128292793 has 2 divisors, whose sum is σ = 128292794. Its totient is φ = 128292792.

The previous prime is 128292767. The next prime is 128292799. The reversal of 128292793 is 397292821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86341264 + 41951529 = 9292^2 + 6477^2 .

It is an emirp because it is prime and its reverse (397292821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128292793 is a prime.

It is not a weakly prime, because it can be changed into another prime (128292799) 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, 64146396 + 64146397.

It is an arithmetic number, because the mean of its divisors is an integer number (64146397).

Almost surely, 2^128292793 is an apocalyptic number.

It is an amenable number.

128292793 is a deficient number, since it is larger than the sum of its proper divisors (1).

128292793 is an equidigital number, since it uses as much as digits as its factorization.

128292793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 128292793 is about 11326.6408524328. The cubic root of 128292793 is about 504.3523940666.

The spelling of 128292793 in words is "one hundred twenty-eight million, two hundred ninety-two thousand, seven hundred ninety-three".