42371805 has 64 divisors (see below), whose sum is σ = 83036160. Its totient is φ = 18019584.

The previous prime is 42371801. The next prime is 42371807. The reversal of 42371805 is 50817324.

42371805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42371805 - 2² = 42371801 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42371801) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 133507 + ... + 133823.

It is an arithmetic number, because the mean of its divisors is an integer number (1297440).

Almost surely, 2^42371805 is an apocalyptic number.

It is an amenable number.

42371805 is a deficient number, since it is larger than the sum of its proper divisors (40664355).

42371805 is a wasteful number, since it uses less digits than its factorization.

42371805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 42371805 is about 6509.3628720482. The cubic root of 42371805 is about 348.6253700946.

The spelling of 42371805 in words is "forty-two million, three hundred seventy-one thousand, eight hundred five".