1131404242 has 8 divisors (see below), whose sum is σ = 1698414732. Its totient is φ = 565266000.

The previous prime is 1131404189. The next prime is 1131404243. The reversal of 1131404242 is 2424041311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1106294121 + 25110121 = 33261^2 + 5011^2 .

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 (1131404243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214809 + ... + 220012.

Almost surely, 2^1131404242 is an apocalyptic number.

1131404242 is a deficient number, since it is larger than the sum of its proper divisors (567010490).

1131404242 is a wasteful number, since it uses less digits than its factorization.

1131404242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436124.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1131404242 is about 33636.3529830450. The cubic root of 1131404242 is about 1042.0117132793.

Adding to 1131404242 its reverse (2424041311), we get a palindrome (3555445553).

The spelling of 1131404242 in words is "one billion, one hundred thirty-one million, four hundred four thousand, two hundred forty-two".