42541665 has 16 divisors (see below), whose sum is σ = 71649600. Its totient is φ = 21494592.

The previous prime is 42541657. The next prime is 42541679. The reversal of 42541665 is 56614524.

It is not a de Polignac number, because 42541665 - 2³ = 42541657 is a prime.

It is a Curzon 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, 74350 + ... + 74919.

It is an arithmetic number, because the mean of its divisors is an integer number (4478100).

Almost surely, 2^42541665 is an apocalyptic number.

It is an amenable number.

42541665 is a deficient number, since it is larger than the sum of its proper divisors (29107935).

42541665 is a wasteful number, since it uses less digits than its factorization.

42541665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149296.

The product of its digits is 28800, while the sum is 33.

The square root of 42541665 is about 6522.3971820183. The cubic root of 42541665 is about 349.0906051787.

The spelling of 42541665 in words is "forty-two million, five hundred forty-one thousand, six hundred sixty-five".