42524081 has 2 divisors, whose sum is σ = 42524082. Its totient is φ = 42524080.

The previous prime is 42524059. The next prime is 42524087. The reversal of 42524081 is 18042524.

It is a happy number.

42524081 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., 31528225 + 10995856 = 5615^2 + 3316^2 .

It is a cyclic number.

It is not a de Polignac number, because 42524081 - 2⁶ = 42524017 is a prime.

It is a super-2 number, since 2×42524081² = 3616594929789122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42524081.

It is not a weakly prime, because it can be changed into another prime (42524087) 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, 21262040 + 21262041.

It is an arithmetic number, because the mean of its divisors is an integer number (21262041).

Almost surely, 2^42524081 is an apocalyptic number.

It is an amenable number.

42524081 is a deficient number, since it is larger than the sum of its proper divisors (1).

42524081 is an equidigital number, since it uses as much as digits as its factorization.

42524081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 42524081 is about 6521.0490720435. The cubic root of 42524081 is about 349.0425013168.

The spelling of 42524081 in words is "forty-two million, five hundred twenty-four thousand, eighty-one".