42166746 has 48 divisors (see below), whose sum is σ = 94352544. Its totient is φ = 13601952.

The previous prime is 42166723. The next prime is 42166753. The reversal of 42166746 is 64766124.

42166746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42166746.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 121345 + ... + 121691.

It is an arithmetic number, because the mean of its divisors is an integer number (1965678).

Almost surely, 2^42166746 is an apocalyptic number.

42166746 is an abundant number, since it is smaller than the sum of its proper divisors (52185798).

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

42166746 is a wasteful number, since it uses less digits than its factorization.

42166746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 552 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 42166746 is about 6493.5926881812. The cubic root of 42166746 is about 348.0620678035.

The spelling of 42166746 in words is "forty-two million, one hundred sixty-six thousand, seven hundred forty-six".