1140044240 has 20 divisors (see below), whose sum is σ = 2650603044. Its totient is φ = 456017664.

The previous prime is 1140044221. The next prime is 1140044261. The reversal of 1140044240 is 424400411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 455907904 + 684136336 = 21352^2 + 26156^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 7125197 + ... + 7125356.

Almost surely, 2^1140044240 is an apocalyptic number.

1140044240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140044240 is an abundant number, since it is smaller than the sum of its proper divisors (1510558804).

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

1140044240 is a wasteful number, since it uses less digits than its factorization.

1140044240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14250566 (or 14250560 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1140044240 is about 33764.5411637712. The cubic root of 1140044240 is about 1044.6574398193.

Adding to 1140044240 its reverse (424400411), we get a palindrome (1564444651).

The spelling of 1140044240 in words is "one billion, one hundred forty million, forty-four thousand, two hundred forty".