42530533 has 2 divisors, whose sum is σ = 42530534. Its totient is φ = 42530532.

The previous prime is 42530507. The next prime is 42530557. The reversal of 42530533 is 33503524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22118209 + 20412324 = 4703^2 + 4518^2 .

It is a cyclic number.

It is not a de Polignac number, because 42530533 - 2⁹ = 42530021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42530498 and 42530507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42530573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21265266 + 21265267.

It is an arithmetic number, because the mean of its divisors is an integer number (21265267).

Almost surely, 2^42530533 is an apocalyptic number.

It is an amenable number.

42530533 is a deficient number, since it is larger than the sum of its proper divisors (1).

42530533 is an equidigital number, since it uses as much as digits as its factorization.

42530533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 25.

The square root of 42530533 is about 6521.5437589577. The cubic root of 42530533 is about 349.0601533411.

The spelling of 42530533 in words is "forty-two million, five hundred thirty thousand, five hundred thirty-three".