1117142786 has 8 divisors (see below), whose sum is σ = 1677018060. Its totient is φ = 558136768.

The previous prime is 1117142779. The next prime is 1117142797. The reversal of 1117142786 is 6872417111.

It can be written as a sum of positive squares in 2 ways, for example, as 1067002225 + 50140561 = 32665^2 + 7081^2 .

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, 214091 + ... + 219246.

Almost surely, 2^1117142786 is an apocalyptic number.

1117142786 is a deficient number, since it is larger than the sum of its proper divisors (559875274).

1117142786 is a wasteful number, since it uses less digits than its factorization.

1117142786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434628.

The product of its digits is 18816, while the sum is 38.

The square root of 1117142786 is about 33423.6860025940. The cubic root of 1117142786 is about 1037.6149691339.

Adding to 1117142786 its reverse (6872417111), we get a palindrome (7989559897).

The spelling of 1117142786 in words is "one billion, one hundred seventeen million, one hundred forty-two thousand, seven hundred eighty-six".