1205442213 has 32 divisors (see below), whose sum is σ = 1776552960. Its totient is φ = 723634560.

The previous prime is 1205442209. The next prime is 1205442221. The reversal of 1205442213 is 3122445021.

It is not a de Polignac number, because 1205442213 - 2² = 1205442209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205442233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210873 + ... + 216513.

It is an arithmetic number, because the mean of its divisors is an integer number (55517280).

Almost surely, 2^1205442213 is an apocalyptic number.

It is an amenable number.

1205442213 is a deficient number, since it is larger than the sum of its proper divisors (571110747).

1205442213 is a wasteful number, since it uses less digits than its factorization.

1205442213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1205442213 is about 34719.4788699370. The cubic root of 1205442213 is about 1064.2625951844.

Adding to 1205442213 its reverse (3122445021), we get a palindrome (4327887234).

The spelling of 1205442213 in words is "one billion, two hundred five million, four hundred forty-two thousand, two hundred thirteen".