11111042242 has 8 divisors (see below), whose sum is σ = 16687116432. Its totient is φ = 5548670100.

The previous prime is 11111042209. The next prime is 11111042251. The reversal of 11111042242 is 24224011111.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3423484 + ... + 3426727.

It is an arithmetic number, because the mean of its divisors is an integer number (2085889554).

Almost surely, 2^11111042242 is an apocalyptic number.

11111042242 is a deficient number, since it is larger than the sum of its proper divisors (5576074190).

11111042242 is an equidigital number, since it uses as much as digits as its factorization.

11111042242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851024.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11111042242 its reverse (24224011111), we get a palindrome (35335053353).

It can be divided in two parts, 11 and 111042242, that added together give a triangular number (111042253 = T₁₄₉₀₂).

The spelling of 11111042242 in words is "eleven billion, one hundred eleven million, forty-two thousand, two hundred forty-two".