128540141 has 8 divisors (see below), whose sum is σ = 129314304. Its totient is φ = 127769040.

The previous prime is 128540117. The next prime is 128540161. The reversal of 128540141 is 141045821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128540141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128540141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128540161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211460 + ... + 212066.

It is an arithmetic number, because the mean of its divisors is an integer number (16164288).

Almost surely, 2^128540141 is an apocalyptic number.

It is an amenable number.

128540141 is a deficient number, since it is larger than the sum of its proper divisors (774163).

128540141 is an equidigital number, since it uses as much as digits as its factorization.

128540141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 128540141 is about 11337.5544541140. The cubic root of 128540141 is about 504.6763157928.

Adding to 128540141 its reverse (141045821), we get a palindrome (269585962).

The spelling of 128540141 in words is "one hundred twenty-eight million, five hundred forty thousand, one hundred forty-one".