1011144 has 16 divisors (see below), whose sum is σ = 2527920. Its totient is φ = 337040.

The previous prime is 1011139. The next prime is 1011163. The reversal of 1011144 is 4411101.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21042 + ... + 21089.

It is an arithmetic number, because the mean of its divisors is an integer number (157995).

2^1011144 is an apocalyptic number.

It is an amenable number.

1011144 is an abundant number, since it is smaller than the sum of its proper divisors (1516776).

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

1011144 is a wasteful number, since it uses less digits than its factorization.

1011144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42140 (or 42136 counting only the distinct ones).

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

The square root of 1011144 is about 1005.5565623077. The cubic root of 1011144 is about 100.3700952718.

Adding to 1011144 its reverse (4411101), we get a palindrome (5422245).

The spelling of 1011144 in words is "one million, eleven thousand, one hundred forty-four".