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422605 = 584521
BaseRepresentation
bin1100111001011001101
3210110201001
41213023031
5102010410
613020301
73410041
oct1471315
9713631
10422605
11269567
12184691
1311a481
14b0021
158533a
hex672cd

422605 has 4 divisors (see below), whose sum is σ = 507132. Its totient is φ = 338080.

The previous prime is 422581. The next prime is 422621. The reversal of 422605 is 506224.

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 49284 + 373321 = 222^2 + 611^2 .

It is not a de Polignac number, because 422605 - 25 = 422573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42256 + ... + 42265.

It is an arithmetic number, because the mean of its divisors is an integer number (126783).

2422605 is an apocalyptic number.

It is an amenable number.

422605 is a deficient number, since it is larger than the sum of its proper divisors (84527).

422605 is an equidigital number, since it uses as much as digits as its factorization.

422605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84526.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 422605 is about 650.0807642132. The cubic root of 422605 is about 75.0432343317.

Adding to 422605 its reverse (506224), we get a palindrome (928829).

The spelling of 422605 in words is "four hundred twenty-two thousand, six hundred five".

Divisors: 1 5 84521 422605