42528089 has 2 divisors, whose sum is σ = 42528090. Its totient is φ = 42528088.

The previous prime is 42528047. The next prime is 42528097. The reversal of 42528089 is 98082524.

42528089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 17689 = 6520^2 + 133^2 .

It is a cyclic number.

It is not a de Polignac number, because 42528089 - 2¹² = 42523993 is a prime.

It is not a weakly prime, because it can be changed into another prime (42528019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21264044 + 21264045.

It is an arithmetic number, because the mean of its divisors is an integer number (21264045).

Almost surely, 2^42528089 is an apocalyptic number.

It is an amenable number.

42528089 is a deficient number, since it is larger than the sum of its proper divisors (1).

42528089 is an equidigital number, since it uses as much as digits as its factorization.

42528089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 42528089 is about 6521.3563773191. The cubic root of 42528089 is about 349.0534670125.

The spelling of 42528089 in words is "forty-two million, five hundred twenty-eight thousand, eighty-nine".