42644066 has 8 divisors (see below), whose sum is σ = 64111824. Its totient is φ = 21273460.

The previous prime is 42644057. The next prime is 42644071. The reversal of 42644066 is 66044624.

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

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 3 ways as a sum of consecutive naturals, for example, 23180 + ... + 24951.

It is an arithmetic number, because the mean of its divisors is an integer number (8013978).

Almost surely, 2^42644066 is an apocalyptic number.

42644066 is a deficient number, since it is larger than the sum of its proper divisors (21467758).

42644066 is a wasteful number, since it uses less digits than its factorization.

42644066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48576.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 42644066 is about 6530.2424151022. The cubic root of 42644066 is about 349.3704765571.

The spelling of 42644066 in words is "forty-two million, six hundred forty-four thousand, sixty-six".