42545566 has 8 divisors (see below), whose sum is σ = 72935280. Its totient is φ = 18233808.

The previous prime is 42545557. The next prime is 42545593. The reversal of 42545566 is 66554524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519471 + ... + 1519498.

It is an arithmetic number, because the mean of its divisors is an integer number (9116910).

Almost surely, 2^42545566 is an apocalyptic number.

42545566 is a deficient number, since it is larger than the sum of its proper divisors (30389714).

42545566 is a wasteful number, since it uses less digits than its factorization.

42545566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038978.

The product of its digits is 144000, while the sum is 37.

The square root of 42545566 is about 6522.6962216556. The cubic root of 42545566 is about 349.1012751954.

The spelling of 42545566 in words is "forty-two million, five hundred forty-five thousand, five hundred sixty-six".