42221255 has 8 divisors (see below), whose sum is σ = 52035072. Its totient is φ = 32863968.

The previous prime is 42221243. The next prime is 42221269. The reversal of 42221255 is 55212224.

42221255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42221255 - 2⁴ = 42221239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42221255.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113927 + ... + 114296.

It is an arithmetic number, because the mean of its divisors is an integer number (6504384).

Almost surely, 2^42221255 is an apocalyptic number.

42221255 is a deficient number, since it is larger than the sum of its proper divisors (9813817).

42221255 is a wasteful number, since it uses less digits than its factorization.

42221255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228265.

The product of its digits is 1600, while the sum is 23.

The square root of 42221255 is about 6497.7884699334. The cubic root of 42221255 is about 348.2119832990.

Adding to 42221255 its reverse (55212224), we get a palindrome (97433479).

The spelling of 42221255 in words is "forty-two million, two hundred twenty-one thousand, two hundred fifty-five".