11142787 has 8 divisors (see below), whose sum is σ = 11676960. Its totient is φ = 10612800.

The previous prime is 11142767. The next prime is 11142821. The reversal of 11142787 is 78724111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11142787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11142767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5287 + ... + 7087.

It is an arithmetic number, because the mean of its divisors is an integer number (1459620).

Almost surely, 2^11142787 is an apocalyptic number.

11142787 is a deficient number, since it is larger than the sum of its proper divisors (534173).

11142787 is a wasteful number, since it uses less digits than its factorization.

11142787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093.

The product of its digits is 3136, while the sum is 31.

The square root of 11142787 is about 3338.0813351385. The cubic root of 11142787 is about 223.3561643450.

Adding to 11142787 its reverse (78724111), we get a palindrome (89866898).

The spelling of 11142787 in words is "eleven million, one hundred forty-two thousand, seven hundred eighty-seven".