442234561 has 4 divisors (see below), whose sum is σ = 456500224. Its totient is φ = 427968900.

The previous prime is 442234453. The next prime is 442234579. The reversal of 442234561 is 165432244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442234561 - 2⁷ = 442234433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 14265631 = 442234561 / (4 + 4 + 2 + 2 + 3 + 4 + 5 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442234061) 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 3 ways as a sum of consecutive naturals, for example, 7132785 + ... + 7132846.

It is an arithmetic number, because the mean of its divisors is an integer number (114125056).

Almost surely, 2^442234561 is an apocalyptic number.

It is an amenable number.

442234561 is a deficient number, since it is larger than the sum of its proper divisors (14265663).

442234561 is a wasteful number, since it uses less digits than its factorization.

442234561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14265662.

The product of its digits is 23040, while the sum is 31.

The square root of 442234561 is about 21029.3737662347. The cubic root of 442234561 is about 761.8758836662.

It can be divided in two parts, 44223 and 4561, that added together give a palindrome (48784).

The spelling of 442234561 in words is "four hundred forty-two million, two hundred thirty-four thousand, five hundred sixty-one".