42489966 has 16 divisors (see below), whose sum is σ = 89452800. Its totient is φ = 13417848.

The previous prime is 42489943. The next prime is 42489983. The reversal of 42489966 is 66998424.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186246 + ... + 186473.

It is an arithmetic number, because the mean of its divisors is an integer number (5590800).

Almost surely, 2^42489966 is an apocalyptic number.

42489966 is an abundant number, since it is smaller than the sum of its proper divisors (46962834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42489966 is a wasteful number, since it uses less digits than its factorization.

42489966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372743.

The product of its digits is 746496, while the sum is 48.

The square root of 42489966 is about 6518.4327871046. The cubic root of 42489966 is about 348.9491364095.

The spelling of 42489966 in words is "forty-two million, four hundred eighty-nine thousand, nine hundred sixty-six".