442340055 has 32 divisors (see below), whose sum is σ = 788659200. Its totient is φ = 235231776.

The previous prime is 442340053. The next prime is 442340089. The reversal of 442340055 is 550043244.

It is not a de Polignac number, because 442340055 - 2¹ = 442340053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442340053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43902 + ... + 53028.

It is an arithmetic number, because the mean of its divisors is an integer number (24645600).

Almost surely, 2^442340055 is an apocalyptic number.

442340055 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

442340055 is a deficient number, since it is larger than the sum of its proper divisors (346319145).

442340055 is a wasteful number, since it uses less digits than its factorization.

442340055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9500 (or 9494 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 442340055 is about 21031.8818701513. The cubic root of 442340055 is about 761.9364600748.

Adding to 442340055 its reverse (550043244), we get a palindrome (992383299).

The spelling of 442340055 in words is "four hundred forty-two million, three hundred forty thousand, fifty-five".