42699717 has 14 divisors (see below), whose sum is σ = 64021382. Its totient is φ = 28465992.

The previous prime is 42699689. The next prime is 42699719. The reversal of 42699717 is 71799624.

42699717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42693156 + 6561 = 6534^2 + 81^2 .

It is not a de Polignac number, because 42699717 - 2⁶ = 42699653 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42699719) 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 in 13 ways as a sum of consecutive naturals, for example, 28558 + ... + 30015.

Almost surely, 2^42699717 is an apocalyptic number.

It is an amenable number.

42699717 is a deficient number, since it is larger than the sum of its proper divisors (21321665).

42699717 is an frugal number, since it uses more digits than its factorization.

42699717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58591 (or 58576 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 42699717 is about 6534.5020468281. The cubic root of 42699717 is about 349.5223880002.

The spelling of 42699717 in words is "forty-two million, six hundred ninety-nine thousand, seven hundred seventeen".