128493241 has 2 divisors, whose sum is σ = 128493242. Its totient is φ = 128493240.

The previous prime is 128493223. The next prime is 128493251. The reversal of 128493241 is 142394821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109098025 + 19395216 = 10445^2 + 4404^2 .

It is a cyclic number.

It is not a de Polignac number, because 128493241 - 2¹⁵ = 128460473 is a prime.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 128493197 and 128493206.

It is not a weakly prime, because it can be changed into another prime (128493251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64246620 + 64246621.

It is an arithmetic number, because the mean of its divisors is an integer number (64246621).

Almost surely, 2^128493241 is an apocalyptic number.

It is an amenable number.

128493241 is a deficient number, since it is larger than the sum of its proper divisors (1).

128493241 is an equidigital number, since it uses as much as digits as its factorization.

128493241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 128493241 is about 11335.4859181246. The cubic root of 128493241 is about 504.6149284878.

The spelling of 128493241 in words is "one hundred twenty-eight million, four hundred ninety-three thousand, two hundred forty-one".