42205255 has 8 divisors (see below), whose sum is σ = 50982624. Its totient is φ = 33540000.

The previous prime is 42205217. The next prime is 42205279. The reversal of 42205255 is 55250224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-42205255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 27196 + ... + 28705.

It is an arithmetic number, because the mean of its divisors is an integer number (6372828).

Almost surely, 2^42205255 is an apocalyptic number.

42205255 is a deficient number, since it is larger than the sum of its proper divisors (8777369).

42205255 is a wasteful number, since it uses less digits than its factorization.

42205255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56057.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 42205255 is about 6496.5571651452. The cubic root of 42205255 is about 348.1679920624.

Adding to 42205255 its reverse (55250224), we get a palindrome (97455479).

The spelling of 42205255 in words is "forty-two million, two hundred five thousand, two hundred fifty-five".