42644527 has 2 divisors, whose sum is σ = 42644528. Its totient is φ = 42644526.

The previous prime is 42644521. The next prime is 42644543. The reversal of 42644527 is 72544624.

42644527 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42644527 is a prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 42644492 and 42644501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42644521) 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, 21322263 + 21322264.

It is an arithmetic number, because the mean of its divisors is an integer number (21322264).

Almost surely, 2^42644527 is an apocalyptic number.

42644527 is a deficient number, since it is larger than the sum of its proper divisors (1).

42644527 is an equidigital number, since it uses as much as digits as its factorization.

42644527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 34.

The square root of 42644527 is about 6530.2777123182. The cubic root of 42644527 is about 349.3717354990.

The spelling of 42644527 in words is "forty-two million, six hundred forty-four thousand, five hundred twenty-seven".