1140420444 has 48 divisors (see below), whose sum is σ = 2682624000. Its totient is φ = 377061696.

The previous prime is 1140420443. The next prime is 1140420461. The reversal of 1140420444 is 4440240411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140420443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1143354 + ... + 1144350.

It is an arithmetic number, because the mean of its divisors is an integer number (55888000).

Almost surely, 2^1140420444 is an apocalyptic number.

It is an amenable number.

1140420444 is an abundant number, since it is smaller than the sum of its proper divisors (1542203556).

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

1140420444 is a wasteful number, since it uses less digits than its factorization.

1140420444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1140420444 is about 33770.1116965876. Note that the first 3 decimals coincide. The cubic root of 1140420444 is about 1044.7723362628.

Adding to 1140420444 its reverse (4440240411), we get a palindrome (5580660855).

The spelling of 1140420444 in words is "one billion, one hundred forty million, four hundred twenty thousand, four hundred forty-four".