1111611142 has 8 divisors (see below), whose sum is σ = 1668897000. Its totient is φ = 555312144.

The previous prime is 1111611139. The next prime is 1111611143. The reversal of 1111611142 is 2411161111.

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 (1111611143) 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, 243892 + ... + 248407.

It is an arithmetic number, because the mean of its divisors is an integer number (208612125).

Almost surely, 2^1111611142 is an apocalyptic number.

1111611142 is a deficient number, since it is larger than the sum of its proper divisors (557285858).

1111611142 is a wasteful number, since it uses less digits than its factorization.

1111611142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493430.

The product of its digits is 48, while the sum is 19.

The square root of 1111611142 is about 33340.8329530022. The cubic root of 1111611142 is about 1035.8995165732.

Adding to 1111611142 its reverse (2411161111), we get a palindrome (3522772253).

The spelling of 1111611142 in words is "one billion, one hundred eleven million, six hundred eleven thousand, one hundred forty-two".