11142747 has 36 divisors (see below), whose sum is σ = 20433816. Its totient is φ = 5785920.

The previous prime is 11142731. The next prime is 11142751. The reversal of 11142747 is 74724111.

It is not a de Polignac number, because 11142747 - 2⁴ = 11142731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11142747.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3703 + ... + 5999.

It is an arithmetic number, because the mean of its divisors is an integer number (567606).

Almost surely, 2^11142747 is an apocalyptic number.

11142747 is a deficient number, since it is larger than the sum of its proper divisors (9291069).

11142747 is a wasteful number, since it uses less digits than its factorization.

11142747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328 (or 2318 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 11142747 is about 3338.0753436674. The cubic root of 11142747 is about 223.3558970792.

Adding to 11142747 its reverse (74724111), we get a palindrome (85866858).

The spelling of 11142747 in words is "eleven million, one hundred forty-two thousand, seven hundred forty-seven".