442434505 has 4 divisors (see below), whose sum is σ = 530921412. Its totient is φ = 353947600.

The previous prime is 442434481. The next prime is 442434529. The reversal of 442434505 is 505434244.

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

It is an interprime number because it is at equal distance from previous prime (442434481) and next prime (442434529).

It can be written as a sum of positive squares in 2 ways, for example, as 103469584 + 338964921 = 10172^2 + 18411^2 .

It is not a de Polignac number, because 442434505 - 2²¹ = 440337353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44243446 + ... + 44243455.

It is an arithmetic number, because the mean of its divisors is an integer number (132730353).

Almost surely, 2^442434505 is an apocalyptic number.

It is an amenable number.

442434505 is a deficient number, since it is larger than the sum of its proper divisors (88486907).

442434505 is an equidigital number, since it uses as much as digits as its factorization.

442434505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88486906.

The product of its (nonzero) digits is 38400, while the sum is 31.

The square root of 442434505 is about 21034.1271508946. The cubic root of 442434505 is about 761.9906866638.

Adding to 442434505 its reverse (505434244), we get a palindrome (947868749).

The spelling of 442434505 in words is "four hundred forty-two million, four hundred thirty-four thousand, five hundred five".