1131242422 has 4 divisors (see below), whose sum is σ = 1696863636. Its totient is φ = 565621210.

The previous prime is 1131242401. The next prime is 1131242423. The reversal of 1131242422 is 2242421311.

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

It is a junction number, because it is equal to n+sod(n) for n = 1131242393 and 1131242402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131242423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282810604 + ... + 282810607.

It is an arithmetic number, because the mean of its divisors is an integer number (424215909).

Almost surely, 2^1131242422 is an apocalyptic number.

1131242422 is a deficient number, since it is larger than the sum of its proper divisors (565621214).

1131242422 is an equidigital number, since it uses as much as digits as its factorization.

1131242422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565621213.

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

The square root of 1131242422 is about 33633.9474638348. The cubic root of 1131242422 is about 1041.9620327235.

Adding to 1131242422 its reverse (2242421311), we get a palindrome (3373663733).

The spelling of 1131242422 in words is "one billion, one hundred thirty-one million, two hundred forty-two thousand, four hundred twenty-two".