1140542784 has 168 divisors, whose sum is σ = 3482355240. Its totient is φ = 355663872.

The previous prime is 1140542779. The next prime is 1140542789. The reversal of 1140542784 is 4872450411.

It is a happy number.

1140542784 is a `hidden beast` number, since 1 + 1 + 40 + 542 + 78 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1140542779) and next prime (1140542789).

It can be written as a sum of positive squares in 4 ways, for example, as 3504384 + 1137038400 = 1872^2 + 33720^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140542789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2633832 + ... + 2634264.

It is an arithmetic number, because the mean of its divisors is an integer number (20728305).

Almost surely, 2^1140542784 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 1140542784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741177620).

1140542784 is an abundant number, since it is smaller than the sum of its proper divisors (2341812456).

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

1140542784 is a wasteful number, since it uses less digits than its factorization.

1140542784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 1140542784 is about 33771.9230130592. The cubic root of 1140542784 is about 1044.8096946710.

The spelling of 1140542784 in words is "one billion, one hundred forty million, five hundred forty-two thousand, seven hundred eighty-four".