422400005 has 4 divisors (see below), whose sum is σ = 506880012. Its totient is φ = 337920000.

The previous prime is 422399981. The next prime is 422400047. The reversal of 422400005 is 500004224.

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 251888641 + 170511364 = 15871^2 + 13058^2 .

It is not a de Polignac number, because 422400005 - 2⁸ = 422399749 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, 42239996 + ... + 42240005.

It is an arithmetic number, because the mean of its divisors is an integer number (126720003).

Almost surely, 2^422400005 is an apocalyptic number.

It is an amenable number.

422400005 is a deficient number, since it is larger than the sum of its proper divisors (84480007).

422400005 is an equidigital number, since it uses as much as digits as its factorization.

422400005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84480006.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 422400005 is about 20552.3722475047. The cubic root of 422400005 is about 750.3109851073.

Adding to 422400005 its reverse (500004224), we get a palindrome (922404229).

The spelling of 422400005 in words is "four hundred twenty-two million, four hundred thousand, five".