128850541 has 2 divisors, whose sum is σ = 128850542. Its totient is φ = 128850540.

The previous prime is 128850529. The next prime is 128850563. The reversal of 128850541 is 145058821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81378441 + 47472100 = 9021^2 + 6890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128850541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128850497 and 128850506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128850341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64425270 + 64425271.

It is an arithmetic number, because the mean of its divisors is an integer number (64425271).

Almost surely, 2^128850541 is an apocalyptic number.

It is an amenable number.

128850541 is a deficient number, since it is larger than the sum of its proper divisors (1).

128850541 is an equidigital number, since it uses as much as digits as its factorization.

128850541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 128850541 is about 11351.2352191292. The cubic root of 128850541 is about 505.0822216873.

The spelling of 128850541 in words is "one hundred twenty-eight million, eight hundred fifty thousand, five hundred forty-one".