42561006 has 8 divisors (see below), whose sum is σ = 85122024. Its totient is φ = 14187000.

The previous prime is 42560977. The next prime is 42561031. The reversal of 42561006 is 60016524.

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

42561006 is an admirable number.

It is a super-2 number, since 2×42561006² = 3622878463464072, which contains 22 as substring.

It is a Curzon number.

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, 3546745 + ... + 3546756.

It is an arithmetic number, because the mean of its divisors is an integer number (10640253).

Almost surely, 2^42561006 is an apocalyptic number.

42561006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42561006 is a wasteful number, since it uses less digits than its factorization.

42561006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7093506.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 42561006 is about 6523.8796739364. The cubic root of 42561006 is about 349.1435002911.

The spelling of 42561006 in words is "forty-two million, five hundred sixty-one thousand, six".