1220442305 has 8 divisors (see below), whose sum is σ = 1464951744. Its totient is φ = 976073200.

The previous prime is 1220442283. The next prime is 1220442331. The reversal of 1220442305 is 5032440221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220442305 - 2⁶ = 1220442241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14891 + ... + 51600.

It is an arithmetic number, because the mean of its divisors is an integer number (183118968).

Almost surely, 2^1220442305 is an apocalyptic number.

It is an amenable number.

1220442305 is a deficient number, since it is larger than the sum of its proper divisors (244509439).

1220442305 is an equidigital number, since it uses as much as digits as its factorization.

1220442305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70167.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1220442305 is about 34934.8293970358. The cubic root of 1220442305 is about 1068.6588446131.

Adding to 1220442305 its reverse (5032440221), we get a palindrome (6252882526).

The spelling of 1220442305 in words is "one billion, two hundred twenty million, four hundred forty-two thousand, three hundred five".