42805441 has 4 divisors (see below), whose sum is σ = 48920512. Its totient is φ = 36690372.

The previous prime is 42805409. The next prime is 42805447. The reversal of 42805441 is 14450824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42805441 - 2⁵ = 42805409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42805447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057525 + ... + 3057538.

It is an arithmetic number, because the mean of its divisors is an integer number (12230128).

Almost surely, 2^42805441 is an apocalyptic number.

It is an amenable number.

42805441 is a deficient number, since it is larger than the sum of its proper divisors (6115071).

42805441 is an equidigital number, since it uses as much as digits as its factorization.

42805441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115070.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 42805441 is about 6542.5867208620. The cubic root of 42805441 is about 349.8106213587.

The spelling of 42805441 in words is "forty-two million, eight hundred five thousand, four hundred forty-one".