1140144 has 20 divisors (see below), whose sum is σ = 2945496. Its totient is φ = 380032.

The previous prime is 1140143. The next prime is 1140157. The reversal of 1140144 is 4410411.

It is not an unprimeable number, because it can be changed into a prime (1140143) 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, 11829 + ... + 11924.

2^1140144 is an apocalyptic number.

It is an amenable number.

1140144 is an abundant number, since it is smaller than the sum of its proper divisors (1805352).

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

1140144 is a wasteful number, since it uses less digits than its factorization.

1140144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23764 (or 23758 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1140144 is about 1067.7752572522. The cubic root of 1140144 is about 104.4687909978.

Adding to 1140144 its reverse (4410411), we get a palindrome (5550555).

The spelling of 1140144 in words is "one million, one hundred forty thousand, one hundred forty-four".