42660745 has 16 divisors (see below), whose sum is σ = 53608320. Its totient is φ = 32529024.

The previous prime is 42660733. The next prime is 42660749. The reversal of 42660745 is 54706624.

42660745 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 42660745 - 2¹³ = 42652553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42660745.

It is not an unprimeable number, because it can be changed into a prime (42660749) 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, 46582 + ... + 47488.

It is an arithmetic number, because the mean of its divisors is an integer number (3350520).

Almost surely, 2^42660745 is an apocalyptic number.

It is an amenable number.

42660745 is a deficient number, since it is larger than the sum of its proper divisors (10947575).

42660745 is a wasteful number, since it uses less digits than its factorization.

42660745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 42660745 is about 6531.5193485130. The cubic root of 42660745 is about 349.4160193581.

The spelling of 42660745 in words is "forty-two million, six hundred sixty thousand, seven hundred forty-five".