1320223442 has 4 divisors (see below), whose sum is σ = 1980335166. Its totient is φ = 660111720.

The previous prime is 1320223439. The next prime is 1320223517. The reversal of 1320223442 is 2443220231.

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

It can be written as a sum of positive squares in only one way, i.e., 1300251481 + 19971961 = 36059^2 + 4469^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330055859 + ... + 330055862.

Almost surely, 2^1320223442 is an apocalyptic number.

1320223442 is a deficient number, since it is larger than the sum of its proper divisors (660111724).

1320223442 is an equidigital number, since it uses as much as digits as its factorization.

1320223442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660111723.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1320223442 is about 36334.8791383706. The cubic root of 1320223442 is about 1097.0232027593.

Adding to 1320223442 its reverse (2443220231), we get a palindrome (3763443673).

The spelling of 1320223442 in words is "one billion, three hundred twenty million, two hundred twenty-three thousand, four hundred forty-two".