128757141 has 8 divisors (see below), whose sum is σ = 190751360. Its totient is φ = 85838076.

The previous prime is 128757137. The next prime is 128757143. The reversal of 128757141 is 141757821.

128757141 is a `hidden beast` number, since 1 + 2 + 87 + 571 + 4 + 1 = 666.

It is not a de Polignac number, because 128757141 - 2² = 128757137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128757096 and 128757105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128757143) 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, 2384365 + ... + 2384418.

It is an arithmetic number, because the mean of its divisors is an integer number (23843920).

Almost surely, 2^128757141 is an apocalyptic number.

It is an amenable number.

128757141 is a deficient number, since it is larger than the sum of its proper divisors (61994219).

128757141 is an equidigital number, since it uses as much as digits as its factorization.

128757141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768792 (or 4768786 counting only the distinct ones).

The product of its digits is 15680, while the sum is 36.

The square root of 128757141 is about 11347.1203836039. The cubic root of 128757141 is about 504.9601523962.

The spelling of 128757141 in words is "one hundred twenty-eight million, seven hundred fifty-seven thousand, one hundred forty-one".