128694041 has 12 divisors (see below), whose sum is σ = 150611328. Its totient is φ = 109641672.

The previous prime is 128694031. The next prime is 128694047. The reversal of 128694041 is 140496821.

It is a happy number.

It is not a de Polignac number, because 128694041 - 2¹⁴ = 128677657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128693992 and 128694010.

It is not an unprimeable number, because it can be changed into a prime (128694047) 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 in 11 ways as a sum of consecutive naturals, for example, 320 + ... + 16046.

It is an arithmetic number, because the mean of its divisors is an integer number (12550944).

Almost surely, 2^128694041 is an apocalyptic number.

It is an amenable number.

128694041 is a deficient number, since it is larger than the sum of its proper divisors (21917287).

128694041 is a wasteful number, since it uses less digits than its factorization.

128694041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15908 (or 15901 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 128694041 is about 11344.3396017573. The cubic root of 128694041 is about 504.8776503259.

The spelling of 128694041 in words is "one hundred twenty-eight million, six hundred ninety-four thousand, forty-one".