42007805 has 16 divisors (see below), whose sum is σ = 59598720. Its totient is φ = 27811392.

The previous prime is 42007793. The next prime is 42007807. The reversal of 42007805 is 50870024.

It is not a de Polignac number, because 42007805 - 2⁶ = 42007741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42007807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19679 + ... + 21708.

It is an arithmetic number, because the mean of its divisors is an integer number (3724920).

Almost surely, 2^42007805 is an apocalyptic number.

It is an amenable number.

42007805 is a deficient number, since it is larger than the sum of its proper divisors (17590915).

42007805 is a wasteful number, since it uses less digits than its factorization.

42007805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41428.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 42007805 is about 6481.3428392579. The cubic root of 42007805 is about 347.6241952089.

Adding to 42007805 its reverse (50870024), we get a palindrome (92877829).

The spelling of 42007805 in words is "forty-two million, seven thousand, eight hundred five".