42004522 has 16 divisors (see below), whose sum is σ = 72374400. Its totient is φ = 17910288.

The previous prime is 42004517. The next prime is 42004531. The reversal of 42004522 is 22540024.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 42004522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4753 + ... + 10324.

It is an arithmetic number, because the mean of its divisors is an integer number (4523400).

Almost surely, 2^42004522 is an apocalyptic number.

42004522 is a deficient number, since it is larger than the sum of its proper divisors (30369878).

42004522 is a wasteful number, since it uses less digits than its factorization.

42004522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15285.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42004522 is about 6481.0895688919. The cubic root of 42004522 is about 347.6151391144.

Adding to 42004522 its reverse (22540024), we get a palindrome (64544546).

The spelling of 42004522 in words is "forty-two million, four thousand, five hundred twenty-two".