42066441 has 6 divisors (see below), whose sum is σ = 60762650. Its totient is φ = 28044288.

The previous prime is 42066433. The next prime is 42066461. The reversal of 42066441 is 14466024.

It can be written as a sum of positive squares in only one way, i.e., 34857216 + 7209225 = 5904^2 + 2685^2 .

It is not a de Polignac number, because 42066441 - 2³ = 42066433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42066461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2337016 + ... + 2337033.

Almost surely, 2^42066441 is an apocalyptic number.

It is an amenable number.

42066441 is a deficient number, since it is larger than the sum of its proper divisors (18696209).

42066441 is a wasteful number, since it uses less digits than its factorization.

42066441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674055 (or 4674052 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 42066441 is about 6485.8647071921. The cubic root of 42066441 is about 347.7858621162.

The spelling of 42066441 in words is "forty-two million, sixty-six thousand, four hundred forty-one".