42075666 has 32 divisors (see below), whose sum is σ = 93717120. Its totient is φ = 13992912.

The previous prime is 42075659. The next prime is 42075689. The reversal of 42075666 is 66657024.

It is a self number, because there is not a number n which added to its sum of digits gives 42075666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39051 + ... + 40113.

It is an arithmetic number, because the mean of its divisors is an integer number (2928660).

Almost surely, 2^42075666 is an apocalyptic number.

42075666 is an abundant number, since it is smaller than the sum of its proper divisors (51641454).

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

42075666 is a wasteful number, since it uses less digits than its factorization.

42075666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 42075666 is about 6486.5758301279. The cubic root of 42075666 is about 347.8112829347.

The spelling of 42075666 in words is "forty-two million, seventy-five thousand, six hundred sixty-six".