442426455 has 28 divisors (see below), whose sum is σ = 796010040. Its totient is φ = 235958832.

The previous prime is 442426447. The next prime is 442426477. The reversal of 442426455 is 554624244.

442426455 is a `hidden beast` number, since 4 + 4 + 2 + 4 + 2 + 645 + 5 = 666.

It is not a de Polignac number, because 442426455 - 2³ = 442426447 is a prime.

It is a congruent number.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 57045 + ... + 64334.

It is an arithmetic number, because the mean of its divisors is an integer number (28428930).

Almost surely, 2^442426455 is an apocalyptic number.

442426455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

442426455 is a deficient number, since it is larger than the sum of its proper divisors (353583585).

442426455 is an equidigital number, since it uses as much as digits as its factorization.

442426455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121402 (or 121387 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The square root of 442426455 is about 21033.9357943301. The cubic root of 442426455 is about 761.9860652173.

The spelling of 442426455 in words is "four hundred forty-two million, four hundred twenty-six thousand, four hundred fifty-five".