1005420233 has 4 divisors (see below), whose sum is σ = 1007116308. Its totient is φ = 1003724160.

The previous prime is 1005420223. The next prime is 1005420271. The reversal of 1005420233 is 3320245001.

It is a happy number.

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 208600249 + 796819984 = 14443^2 + 28228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005420233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005420223) 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, 847148 + ... + 848333.

It is an arithmetic number, because the mean of its divisors is an integer number (251779077).

Almost surely, 2^1005420233 is an apocalyptic number.

It is an amenable number.

1005420233 is a deficient number, since it is larger than the sum of its proper divisors (1696075).

1005420233 is an equidigital number, since it uses as much as digits as its factorization.

1005420233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696074.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1005420233 is about 31708.3621935918. The cubic root of 1005420233 is about 1001.8034898025.

Adding to 1005420233 its reverse (3320245001), we get a palindrome (4325665234).

The spelling of 1005420233 in words is "one billion, five million, four hundred twenty thousand, two hundred thirty-three".