42528589 has 2 divisors, whose sum is σ = 42528590. Its totient is φ = 42528588.

The previous prime is 42528581. The next prime is 42528599. The reversal of 42528589 is 98582524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41409225 + 1119364 = 6435^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 42528589 - 2³ = 42528581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42528581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21264294 + 21264295.

It is an arithmetic number, because the mean of its divisors is an integer number (21264295).

Almost surely, 2^42528589 is an apocalyptic number.

It is an amenable number.

42528589 is a deficient number, since it is larger than the sum of its proper divisors (1).

42528589 is an equidigital number, since it uses as much as digits as its factorization.

42528589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 43.

The square root of 42528589 is about 6521.3947127896. The cubic root of 42528589 is about 349.0548349402.

The spelling of 42528589 in words is "forty-two million, five hundred twenty-eight thousand, five hundred eighty-nine".