1121113442 has 4 divisors (see below), whose sum is σ = 1681670166. Its totient is φ = 560556720.

The previous prime is 1121113423. The next prime is 1121113451. The reversal of 1121113442 is 2443111211.

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

It can be written as a sum of positive squares in only one way, i.e., 982132921 + 138980521 = 31339^2 + 11789^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280278359 + ... + 280278362.

Almost surely, 2^1121113442 is an apocalyptic number.

1121113442 is a deficient number, since it is larger than the sum of its proper divisors (560556724).

1121113442 is an equidigital number, since it uses as much as digits as its factorization.

1121113442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560556723.

The product of its digits is 192, while the sum is 20.

The square root of 1121113442 is about 33483.0321506282. The cubic root of 1121113442 is about 1038.8428457380.

Adding to 1121113442 its reverse (2443111211), we get a palindrome (3564224653).

The spelling of 1121113442 in words is "one billion, one hundred twenty-one million, one hundred thirteen thousand, four hundred forty-two".