140420511440 has 160 divisors (see below), whose sum is σ = 358185110400. Its totient is φ = 50772377600.

The previous prime is 140420511437. The next prime is 140420511463. The reversal of 140420511440 is 44115024041.

140420511440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 184520660 + ... + 184521420.

It is an arithmetic number, because the mean of its divisors is an integer number (2238656940).

Almost surely, 2^140420511440 is an apocalyptic number.

140420511440 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 140420511440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179092555200).

140420511440 is an abundant number, since it is smaller than the sum of its proper divisors (217764598960).

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

140420511440 is a wasteful number, since it uses less digits than its factorization.

140420511440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701 (or 1695 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 140420511440 its reverse (44115024041), we get a palindrome (184535535481).

The spelling of 140420511440 in words is "one hundred forty billion, four hundred twenty million, five hundred eleven thousand, four hundred forty".