442252105 has 4 divisors (see below), whose sum is σ = 530702532. Its totient is φ = 353801680.

The previous prime is 442252103. The next prime is 442252123. The reversal of 442252105 is 501252244.

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

It can be written as a sum of positive squares in 2 ways, for example, as 171583801 + 270668304 = 13099^2 + 16452^2 .

It is not a de Polignac number, because 442252105 - 2¹ = 442252103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442252105.

It is not an unprimeable number, because it can be changed into a prime (442252103) 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, 44225206 + ... + 44225215.

It is an arithmetic number, because the mean of its divisors is an integer number (132675633).

Almost surely, 2^442252105 is an apocalyptic number.

It is an amenable number.

442252105 is a deficient number, since it is larger than the sum of its proper divisors (88450427).

442252105 is an equidigital number, since it uses as much as digits as its factorization.

442252105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88450426.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 442252105 is about 21029.7908929214. The cubic root of 442252105 is about 761.8859583904.

The spelling of 442252105 in words is "four hundred forty-two million, two hundred fifty-two thousand, one hundred five".