1102144 has 28 divisors (see below), whose sum is σ = 2318004. Its totient is φ = 518144.

The previous prime is 1102117. The next prime is 1102147. The reversal of 1102144 is 4412011.

It can be written as a sum of positive squares in 2 ways, for example, as 313600 + 788544 = 560^2 + 888^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582 + ... + 1594.

2^1102144 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 1102144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159002).

1102144 is an abundant number, since it is smaller than the sum of its proper divisors (1215860).

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

1102144 is a wasteful number, since it uses less digits than its factorization.

1102144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1102144 is about 1049.8304625034. The cubic root of 1102144 is about 103.2950349459.

Adding to 1102144 its reverse (4412011), we get a palindrome (5514155).

The spelling of 1102144 in words is "one million, one hundred two thousand, one hundred forty-four".