42205772 has 24 divisors (see below), whose sum is σ = 84909216. Its totient is φ = 17981568.

The previous prime is 42205763. The next prime is 42205777. The reversal of 42205772 is 27750224.

It is not an unprimeable number, because it can be changed into a prime (42205777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488 + ... + 9200.

It is an arithmetic number, because the mean of its divisors is an integer number (3537884).

Almost surely, 2^42205772 is an apocalyptic number.

It is an amenable number.

42205772 is an abundant number, since it is smaller than the sum of its proper divisors (42703444).

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

42205772 is a wasteful number, since it uses less digits than its factorization.

42205772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8897 (or 8895 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 42205772 is about 6496.5969553298. The cubic root of 42205772 is about 348.1694137031.

Adding to 42205772 its reverse (27750224), we get a palindrome (69955996).

The spelling of 42205772 in words is "forty-two million, two hundred five thousand, seven hundred seventy-two".