11142036 has 42 divisors (see below), whose sum is σ = 29242122. Its totient is φ = 3713040.

The previous prime is 11142029. The next prime is 11142049. The reversal of 11142036 is 63024111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10850436 + 291600 = 3294^2 + 540^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1006 + ... + 4826.

It is an arithmetic number, because the mean of its divisors is an integer number (696241).

Almost surely, 2^11142036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11142036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14621061).

11142036 is an abundant number, since it is smaller than the sum of its proper divisors (18100086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11142036 is an equidigital number, since it uses as much as digits as its factorization.

11142036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843 (or 3826 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 11142036 is about 3337.9688434735. The cubic root of 11142036 is about 223.3511463231.

Adding to 11142036 its reverse (63024111), we get a palindrome (74166147).

The spelling of 11142036 in words is "eleven million, one hundred forty-two thousand, thirty-six".