442042255 has 4 divisors (see below), whose sum is σ = 530450712. Its totient is φ = 353633800.

The previous prime is 442042253. The next prime is 442042261. The reversal of 442042255 is 552240244.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 442042255 - 2¹ = 442042253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442042253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44204221 + ... + 44204230.

It is an arithmetic number, because the mean of its divisors is an integer number (132612678).

Almost surely, 2^442042255 is an apocalyptic number.

442042255 is a deficient number, since it is larger than the sum of its proper divisors (88408457).

442042255 is an equidigital number, since it uses as much as digits as its factorization.

442042255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88408456.

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 442042255 is about 21024.8009503063. The cubic root of 442042255 is about 761.7654335726.

Adding to 442042255 its reverse (552240244), we get a palindrome (994282499).

The spelling of 442042255 in words is "four hundred forty-two million, forty-two thousand, two hundred fifty-five".