1440140000 has 240 divisors, whose sum is σ = 3967729920. Its totient is φ = 510720000.

The previous prime is 1440139997. The next prime is 1440140003. The reversal of 1440140000 is 410441.

It is an interprime number because it is at equal distance from previous prime (1440139997) and next prime (1440140003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440140003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7539905 + ... + 7540095.

It is an arithmetic number, because the mean of its divisors is an integer number (16532208).

Almost surely, 2^1440140000 is an apocalyptic number.

1440140000 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 1440140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1983864960).

1440140000 is an abundant number, since it is smaller than the sum of its proper divisors (2527589920).

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

1440140000 is a wasteful number, since it uses less digits than its factorization.

1440140000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1440140000 is about 37949.1765391556. The cubic root of 1440140000 is about 1129.2798293169.

Adding to 1440140000 its reverse (410441), we get a palindrome (1440550441).

The spelling of 1440140000 in words is "one billion, four hundred forty million, one hundred forty thousand".