42805601 has 4 divisors (see below), whose sum is σ = 42836400. Its totient is φ = 42774804.

The previous prime is 42805589. The next prime is 42805603. The reversal of 42805601 is 10650824.

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 42805601 - 2¹⁰ = 42804577 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 (42805603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13211 + ... + 16128.

It is an arithmetic number, because the mean of its divisors is an integer number (10709100).

Almost surely, 2^42805601 is an apocalyptic number.

It is an amenable number.

42805601 is a deficient number, since it is larger than the sum of its proper divisors (30799).

42805601 is a wasteful number, since it uses less digits than its factorization.

42805601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30798.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 42805601 is about 6542.5989484302. The cubic root of 42805601 is about 349.8110572038.

The spelling of 42805601 in words is "forty-two million, eight hundred five thousand, six hundred one".