42660243 has 16 divisors (see below), whose sum is σ = 63572640. Its totient is φ = 28272672.

The previous prime is 42660229. The next prime is 42660271. The reversal of 42660243 is 34206624.

42660243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42660243 - 2⁶ = 42660179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42660143) 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, 105 + ... + 9237.

It is an arithmetic number, because the mean of its divisors is an integer number (3973290).

Almost surely, 2^42660243 is an apocalyptic number.

42660243 is a deficient number, since it is larger than the sum of its proper divisors (20912397).

42660243 is a wasteful number, since it uses less digits than its factorization.

42660243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315 (or 9309 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 42660243 is about 6531.4809193628. The cubic root of 42660243 is about 349.4146487965.

Adding to 42660243 its reverse (34206624), we get a palindrome (76866867).

The spelling of 42660243 in words is "forty-two million, six hundred sixty thousand, two hundred forty-three".