128302541 has 2 divisors, whose sum is σ = 128302542. Its totient is φ = 128302540.

The previous prime is 128302529. The next prime is 128302547. The reversal of 128302541 is 145203821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115132900 + 13169641 = 10730^2 + 3629^2 .

It is a cyclic number.

It is not a de Polignac number, because 128302541 - 2⁶ = 128302477 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128302541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128302547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64151270 + 64151271.

It is an arithmetic number, because the mean of its divisors is an integer number (64151271).

Almost surely, 2^128302541 is an apocalyptic number.

It is an amenable number.

128302541 is a deficient number, since it is larger than the sum of its proper divisors (1).

128302541 is an equidigital number, since it uses as much as digits as its factorization.

128302541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 128302541 is about 11327.0711571880. The cubic root of 128302541 is about 504.3651677190.

The spelling of 128302541 in words is "one hundred twenty-eight million, three hundred two thousand, five hundred forty-one".