42540006 has 8 divisors (see below), whose sum is σ = 85080024. Its totient is φ = 14180000.

The previous prime is 42539989. The next prime is 42540019. The reversal of 42540006 is 60004524.

It is a happy number.

42540006 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.

42540006 is an admirable number.

It is a super-2 number, since 2×42540006² = 3619304220960072, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3544995 + ... + 3545006.

It is an arithmetic number, because the mean of its divisors is an integer number (10635003).

Almost surely, 2^42540006 is an apocalyptic number.

42540006 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.

42540006 is a wasteful number, since it uses less digits than its factorization.

42540006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7090006.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42540006 is about 6522.2700036107. The cubic root of 42540006 is about 349.0860672836.

The spelling of 42540006 in words is "forty-two million, five hundred forty thousand, six".