1320401242 has 8 divisors (see below), whose sum is σ = 2013070932. Its totient is φ = 649377600.

The previous prime is 1320401239. The next prime is 1320401249. The reversal of 1320401242 is 2421040231.

It can be written as a sum of positive squares in 2 ways, for example, as 1122183001 + 198218241 = 33499^2 + 14079^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1320401249) 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, 5411359 + ... + 5411602.

Almost surely, 2^1320401242 is an apocalyptic number.

1320401242 is a deficient number, since it is larger than the sum of its proper divisors (692669690).

1320401242 is a wasteful number, since it uses less digits than its factorization.

1320401242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10823024.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1320401242 is about 36337.3257408962. The cubic root of 1320401242 is about 1097.0724474462.

Adding to 1320401242 its reverse (2421040231), we get a palindrome (3741441473).

The spelling of 1320401242 in words is "one billion, three hundred twenty million, four hundred one thousand, two hundred forty-two".