111312142 has 8 divisors (see below), whose sum is σ = 167013000. Its totient is φ = 55641144.

The previous prime is 111312139. The next prime is 111312143. The reversal of 111312142 is 241213111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10609 + ... + 18307.

It is an arithmetic number, because the mean of its divisors is an integer number (20876625).

Almost surely, 2^111312142 is an apocalyptic number.

111312142 is a deficient number, since it is larger than the sum of its proper divisors (55700858).

111312142 is an equidigital number, since it uses as much as digits as its factorization.

111312142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14930.

The product of its digits is 48, while the sum is 16.

The square root of 111312142 is about 10550.4569569285. The cubic root of 111312142 is about 481.0396187991.

Adding to 111312142 its reverse (241213111), we get a palindrome (352525253).

The spelling of 111312142 in words is "one hundred eleven million, three hundred twelve thousand, one hundred forty-two".