42665707 has 16 divisors (see below), whose sum is σ = 51028992. Its totient is φ = 34908480.

The previous prime is 42665687. The next prime is 42665717. The reversal of 42665707 is 70756624.

42665707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42665707 - 2¹⁵ = 42632939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42665717) 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 15 ways as a sum of consecutive naturals, for example, 11908 + ... + 15070.

It is an arithmetic number, because the mean of its divisors is an integer number (3189312).

Almost surely, 2^42665707 is an apocalyptic number.

42665707 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

42665707 is a deficient number, since it is larger than the sum of its proper divisors (8363285).

42665707 is a wasteful number, since it uses less digits than its factorization.

42665707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 42665707 is about 6531.8991878320. The cubic root of 42665707 is about 349.4295660435.

The spelling of 42665707 in words is "forty-two million, six hundred sixty-five thousand, seven hundred seven".