42239966 has 8 divisors (see below), whose sum is σ = 63637320. Its totient is φ = 21027528.

The previous prime is 42239947. The next prime is 42239969. The reversal of 42239966 is 66993224.

42239966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42239969) 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 3 ways as a sum of consecutive naturals, for example, 45656 + ... + 46571.

It is an arithmetic number, because the mean of its divisors is an integer number (7954665).

Almost surely, 2^42239966 is an apocalyptic number.

42239966 is a deficient number, since it is larger than the sum of its proper divisors (21397354).

42239966 is a wasteful number, since it uses less digits than its factorization.

42239966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92458.

The product of its digits is 139968, while the sum is 41.

The square root of 42239966 is about 6499.2281080141. The cubic root of 42239966 is about 348.2634142050.

The spelling of 42239966 in words is "forty-two million, two hundred thirty-nine thousand, nine hundred sixty-six".