1101144 has 64 divisors (see below), whose sum is σ = 3104640. Its totient is φ = 322560.

The previous prime is 1101143. The next prime is 1101169. The reversal of 1101144 is 4411011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11304 + ... + 11400.

It is an arithmetic number, because the mean of its divisors is an integer number (48510).

2^1101144 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 1101144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1552320).

1101144 is an abundant number, since it is smaller than the sum of its proper divisors (2003496).

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

1101144 is a wasteful number, since it uses less digits than its factorization.

1101144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1101144 is about 1049.3540870459. The cubic root of 1101144 is about 103.2637848578.

Adding to 1101144 its reverse (4411011), we get a palindrome (5512155).

It can be divided in two parts, 11011 and 44, that multiplied together give a palindrome (484484).

The spelling of 1101144 in words is "one million, one hundred one thousand, one hundred forty-four".