128122041 has 8 divisors (see below), whose sum is σ = 174052800. Its totient is φ = 83802992.

The previous prime is 128122019. The next prime is 128122051. The reversal of 128122041 is 140221821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128122041 - 2¹⁹ = 127597753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128121999 and 128122017.

It is not an unprimeable number, because it can be changed into a prime (128122051) 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 7 ways as a sum of consecutive naturals, for example, 402741 + ... + 403058.

It is an arithmetic number, because the mean of its divisors is an integer number (21756600).

Almost surely, 2^128122041 is an apocalyptic number.

It is an amenable number.

128122041 is a deficient number, since it is larger than the sum of its proper divisors (45930759).

128122041 is an equidigital number, since it uses as much as digits as its factorization.

128122041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805855.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 128122041 is about 11319.1007151628. The cubic root of 128122041 is about 504.1285378567.

Adding to 128122041 its reverse (140221821), we get a palindrome (268343862).

The spelling of 128122041 in words is "one hundred twenty-eight million, one hundred twenty-two thousand, forty-one".