42166745 has 8 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 33598000.

The previous prime is 42166723. The next prime is 42166753. The reversal of 42166745 is 54766124.

42166745 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 not a de Polignac number, because 42166745 - 2⁸ = 42166489 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 15545 + ... + 18054.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^42166745 is an apocalyptic number.

It is an amenable number.

42166745 is a deficient number, since it is larger than the sum of its proper divisors (8636455).

42166745 is a wasteful number, since it uses less digits than its factorization.

42166745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33855.

The product of its digits is 40320, while the sum is 35.

The square root of 42166745 is about 6493.5926111822. The cubic root of 42166745 is about 348.0620650521.

The spelling of 42166745 in words is "forty-two million, one hundred sixty-six thousand, seven hundred forty-five".