128512541 has 2 divisors, whose sum is σ = 128512542. Its totient is φ = 128512540.

The previous prime is 128512511. The next prime is 128512547. The reversal of 128512541 is 145215821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128368900 + 143641 = 11330^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 128512541 - 2¹⁴ = 128496157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128512547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64256270 + 64256271.

It is an arithmetic number, because the mean of its divisors is an integer number (64256271).

Almost surely, 2^128512541 is an apocalyptic number.

It is an amenable number.

128512541 is a deficient number, since it is larger than the sum of its proper divisors (1).

128512541 is an equidigital number, since it uses as much as digits as its factorization.

128512541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3200, while the sum is 29.

The square root of 128512541 is about 11336.3371950556. The cubic root of 128512541 is about 504.6401920230.

The spelling of 128512541 in words is "one hundred twenty-eight million, five hundred twelve thousand, five hundred forty-one".