11111442 has 8 divisors (see below), whose sum is σ = 22222896. Its totient is φ = 3703812.

The previous prime is 11111431. The next prime is 11111491. The reversal of 11111442 is 24411111.

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

11111442 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925948 + ... + 925959.

It is an arithmetic number, because the mean of its divisors is an integer number (2777862).

Almost surely, 2^11111442 is an apocalyptic number.

11111442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111442 is a wasteful number, since it uses less digits than its factorization.

11111442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851912.

The product of its digits is 32, while the sum is 15.

The square root of 11111442 is about 3333.3829662972. The cubic root of 11111442 is about 223.1465317513.

Adding to 11111442 its reverse (24411111), we get a palindrome (35522553).

It can be divided in two parts, 111114 and 42, that added together give a triangular number (111156 = T₄₇₁).

The spelling of 11111442 in words is "eleven million, one hundred eleven thousand, four hundred forty-two".