1321441442 has 4 divisors (see below), whose sum is σ = 1982162166. Its totient is φ = 660720720.

The previous prime is 1321441403. The next prime is 1321441481. The reversal of 1321441442 is 2441441231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2441441231 = 19891 ⋅122741.

It is an interprime number because it is at equal distance from previous prime (1321441403) and next prime (1321441481).

It can be written as a sum of positive squares in only one way, i.e., 1234187161 + 87254281 = 35131^2 + 9341^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330360359 + ... + 330360362.

Almost surely, 2^1321441442 is an apocalyptic number.

1321441442 is a deficient number, since it is larger than the sum of its proper divisors (660720724).

1321441442 is an equidigital number, since it uses as much as digits as its factorization.

1321441442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660720723.

The product of its digits is 3072, while the sum is 26.

The square root of 1321441442 is about 36351.6360292078. The cubic root of 1321441442 is about 1097.3604597023.

Adding to 1321441442 its reverse (2441441231), we get a palindrome (3762882673).

The spelling of 1321441442 in words is "one billion, three hundred twenty-one million, four hundred forty-one thousand, four hundred forty-two".