42389075 has 18 divisors (see below), whose sum is σ = 55845756. Its totient is φ = 31911040.

The previous prime is 42389071. The next prime is 42389077. The reversal of 42389075 is 57098324.

42389075 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 42389075 - 2² = 42389071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42389071) 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 17 ways as a sum of consecutive naturals, for example, 4292 + ... + 10158.

It is an arithmetic number, because the mean of its divisors is an integer number (3102542).

Almost surely, 2^42389075 is an apocalyptic number.

42389075 is a deficient number, since it is larger than the sum of its proper divisors (13456681).

42389075 is a wasteful number, since it uses less digits than its factorization.

42389075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911 (or 5889 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 42389075 is about 6510.6892876254. The cubic root of 42389075 is about 348.6727281773.

It can be divided in two parts, 423 and 89075, that added together give a palindrome (89498).

The spelling of 42389075 in words is "forty-two million, three hundred eighty-nine thousand, seventy-five".