1220034243 has 4 divisors (see below), whose sum is σ = 1626712328. Its totient is φ = 813356160.

The previous prime is 1220034239. The next prime is 1220034259. The reversal of 1220034243 is 3424300221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1220034243 - 2² = 1220034239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220034043) 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, 203339038 + ... + 203339043.

It is an arithmetic number, because the mean of its divisors is an integer number (406678082).

Almost surely, 2^1220034243 is an apocalyptic number.

1220034243 is a deficient number, since it is larger than the sum of its proper divisors (406678085).

1220034243 is an equidigital number, since it uses as much as digits as its factorization.

1220034243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406678084.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1220034243 is about 34928.9885768254. The cubic root of 1220034243 is about 1068.5397272312.

Adding to 1220034243 its reverse (3424300221), we get a palindrome (4644334464).

The spelling of 1220034243 in words is "one billion, two hundred twenty million, thirty-four thousand, two hundred forty-three".