1140040020 has 96 divisors (see below), whose sum is σ = 3674942208. Its totient is φ = 258665472.

The previous prime is 1140039997. The next prime is 1140040049. The reversal of 1140040020 is 200400411.

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

It is a junction number, because it is equal to n+sod(n) for n = 1140039978 and 1140040005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47634 + ... + 67446.

It is an arithmetic number, because the mean of its divisors is an integer number (38280648).

Almost surely, 2^1140040020 is an apocalyptic number.

1140040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140040020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1837471104).

1140040020 is an abundant number, since it is smaller than the sum of its proper divisors (2534902188).

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

1140040020 is a wasteful number, since it uses less digits than its factorization.

1140040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19969 (or 19967 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1140040020 is about 33764.4786721193. The cubic root of 1140040020 is about 1044.6561508459.

Adding to 1140040020 its reverse (200400411), we get a palindrome (1340440431).

The spelling of 1140040020 in words is "one billion, one hundred forty million, forty thousand, twenty".