140344244420 has 72 divisors (see below), whose sum is σ = 312682664448. Its totient is φ = 52904116800.

The previous prime is 140344244377. The next prime is 140344244423. The reversal of 140344244420 is 24442443041.

It is a super-3 number, since 3×140344244420³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (140344244423) 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, 1328135 + ... + 1429905.

It is an arithmetic number, because the mean of its divisors is an integer number (4342814784).

Almost surely, 2^140344244420 is an apocalyptic number.

140344244420 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 140344244420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156341332224).

140344244420 is an abundant number, since it is smaller than the sum of its proper divisors (172338420028).

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

140344244420 is a wasteful number, since it uses less digits than its factorization.

140344244420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102009 (or 101988 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 140344244420 its reverse (24442443041), we get a palindrome (164786687461).

The spelling of 140344244420 in words is "one hundred forty billion, three hundred forty-four million, two hundred forty-four thousand, four hundred twenty".