42660717 has 16 divisors (see below), whose sum is σ = 63106560. Its totient is φ = 25415600.

The previous prime is 42660677. The next prime is 42660727. The reversal of 42660717 is 71706624.

It is a cyclic number.

It is not a de Polignac number, because 42660717 - 2⁸ = 42660461 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42660727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9009 + ... + 12902.

It is an arithmetic number, because the mean of its divisors is an integer number (3944160).

Almost surely, 2^42660717 is an apocalyptic number.

It is an amenable number.

42660717 is a deficient number, since it is larger than the sum of its proper divisors (20445843).

42660717 is a wasteful number, since it uses less digits than its factorization.

42660717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21984.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 42660717 is about 6531.5172050604. The cubic root of 42660717 is about 349.4159429127.

It can be divided in two parts, 426607 and 17, that added together give a palindrome (426624).

The spelling of 42660717 in words is "forty-two million, six hundred sixty thousand, seven hundred seventeen".