11111443142 has 8 divisors (see below), whose sum is σ = 16668299496. Its totient is φ = 5555343312.

The previous prime is 11111443139. The next prime is 11111443159. The reversal of 11111443142 is 24134411111.

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

It is a congruent 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, 150863 + ... + 212090.

It is an arithmetic number, because the mean of its divisors is an integer number (2083537437).

Almost surely, 2^11111443142 is an apocalyptic number.

11111443142 is a deficient number, since it is larger than the sum of its proper divisors (5556856354).

11111443142 is a wasteful number, since it uses less digits than its factorization.

11111443142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378262.

The product of its digits is 384, while the sum is 23.

Adding to 11111443142 its reverse (24134411111), we get a palindrome (35245854253).

The spelling of 11111443142 in words is "eleven billion, one hundred eleven million, four hundred forty-three thousand, one hundred forty-two".