42666535 has 16 divisors (see below), whose sum is σ = 52715520. Its totient is φ = 33132960.

The previous prime is 42666523. The next prime is 42666577. The reversal of 42666535 is 53566624.

It is a de Polignac number, because none of the positive numbers 2^k-42666535 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42666494 and 42666503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40546 + ... + 41584.

It is an arithmetic number, because the mean of its divisors is an integer number (3294720).

Almost surely, 2^42666535 is an apocalyptic number.

42666535 is a deficient number, since it is larger than the sum of its proper divisors (10048985).

42666535 is a wasteful number, since it uses less digits than its factorization.

42666535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278.

The product of its digits is 129600, while the sum is 37.

The square root of 42666535 is about 6531.9625687844. The cubic root of 42666535 is about 349.4318264522.

It can be divided in two parts, 4266 and 6535, that added together give a palindrome (10801).

The spelling of 42666535 in words is "forty-two million, six hundred sixty-six thousand, five hundred thirty-five".