42166506 has 16 divisors (see below), whose sum is σ = 84397248. Its totient is φ = 14044800.

The previous prime is 42166499. The next prime is 42166507. The reversal of 42166506 is 60566124.

It is not an unprimeable number, because it can be changed into a prime (42166507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12346 + ... + 15386.

It is an arithmetic number, because the mean of its divisors is an integer number (5274828).

Almost surely, 2^42166506 is an apocalyptic number.

42166506 is an abundant number, since it is smaller than the sum of its proper divisors (42230742).

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

42166506 is a wasteful number, since it uses less digits than its factorization.

42166506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 42166506 is about 6493.5742084002. The cubic root of 42166506 is about 348.0614074486.

The spelling of 42166506 in words is "forty-two million, one hundred sixty-six thousand, five hundred six".