1322040442 has 4 divisors (see below), whose sum is σ = 1983060666. Its totient is φ = 661020220.

The previous prime is 1322040413. The next prime is 1322040491. The reversal of 1322040442 is 2440402231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2440402231 = 419 ⋅5824349.

It can be written as a sum of positive squares in only one way, i.e., 1294488441 + 27552001 = 35979^2 + 5249^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330510109 + ... + 330510112.

Almost surely, 2^1322040442 is an apocalyptic number.

1322040442 is a deficient number, since it is larger than the sum of its proper divisors (661020224).

1322040442 is an equidigital number, since it uses as much as digits as its factorization.

1322040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661020223.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1322040442 is about 36359.8740646884. The cubic root of 1322040442 is about 1097.5262432172.

Adding to 1322040442 its reverse (2440402231), we get a palindrome (3762442673).

The spelling of 1322040442 in words is "one billion, three hundred twenty-two million, forty thousand, four hundred forty-two".