11142861 has 8 divisors (see below), whose sum is σ = 14881920. Its totient is φ = 7416192.

The previous prime is 11142851. The next prime is 11142869. The reversal of 11142861 is 16824111.

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

It is not a de Polignac number, because 11142861 - 2¹⁴ = 11126477 is a prime.

It is a super-3 number, since 3×11142861³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142869) 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 7 ways as a sum of consecutive naturals, for example, 741 + ... + 4778.

It is an arithmetic number, because the mean of its divisors is an integer number (1860240).

Almost surely, 2^11142861 is an apocalyptic number.

It is an amenable number.

11142861 is a deficient number, since it is larger than the sum of its proper divisors (3739059).

11142861 is an equidigital number, since it uses as much as digits as its factorization.

11142861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6195.

The product of its digits is 384, while the sum is 24.

The square root of 11142861 is about 3338.0924193317. The cubic root of 11142861 is about 223.3566587850.

Adding to 11142861 its reverse (16824111), we get a palindrome (27966972).

The spelling of 11142861 in words is "eleven million, one hundred forty-two thousand, eight hundred sixty-one".