42005802 has 16 divisors (see below), whose sum is σ = 85024800. Its totient is φ = 13833072.

The previous prime is 42005783. The next prime is 42005807. The reversal of 42005802 is 20850024.

It is not an unprimeable number, because it can be changed into a prime (42005807) 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 7 ways as a sum of consecutive naturals, for example, 41677 + ... + 42672.

It is an arithmetic number, because the mean of its divisors is an integer number (5314050).

Almost surely, 2^42005802 is an apocalyptic number.

42005802 is an abundant number, since it is smaller than the sum of its proper divisors (43018998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42005802 is a wasteful number, since it uses less digits than its factorization.

42005802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84437.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 42005802 is about 6481.1883169678. The cubic root of 42005802 is about 347.6186700267.

Adding to 42005802 its reverse (20850024), we get a palindrome (62855826).

It can be divided in two parts, 4 and 2005802, that multiplied together give a palindrome (8023208).

The spelling of 42005802 in words is "forty-two million, five thousand, eight hundred two".