42643166 has 32 divisors (see below), whose sum is σ = 70260480. Its totient is φ = 19353600.

The previous prime is 42643141. The next prime is 42643187. The reversal of 42643166 is 66134624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66206 + ... + 66846.

It is an arithmetic number, because the mean of its divisors is an integer number (2195640).

Almost surely, 2^42643166 is an apocalyptic number.

42643166 is a deficient number, since it is larger than the sum of its proper divisors (27617314).

42643166 is a wasteful number, since it uses less digits than its factorization.

42643166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740.

The product of its digits is 20736, while the sum is 32.

The square root of 42643166 is about 6530.1735045862. The cubic root of 42643166 is about 349.3680187267.

The spelling of 42643166 in words is "forty-two million, six hundred forty-three thousand, one hundred sixty-six".