42223505 has 4 divisors (see below), whose sum is σ = 50668212. Its totient is φ = 33778800.

The previous prime is 42223429. The next prime is 42223513. The reversal of 42223505 is 50532224.

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 31719424 + 10504081 = 5632^2 + 3241^2 .

It is not a de Polignac number, because 42223505 - 2²⁰ = 41174929 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, 4222346 + ... + 4222355.

It is an arithmetic number, because the mean of its divisors is an integer number (12667053).

Almost surely, 2^42223505 is an apocalyptic number.

It is an amenable number.

42223505 is a deficient number, since it is larger than the sum of its proper divisors (8444707).

42223505 is an equidigital number, since it uses as much as digits as its factorization.

42223505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8444706.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 42223505 is about 6497.9616034569. The cubic root of 42223505 is about 348.2181686753.

Adding to 42223505 its reverse (50532224), we get a palindrome (92755729).

The spelling of 42223505 in words is "forty-two million, two hundred twenty-three thousand, five hundred five".