140205233440 has 96 divisors (see below), whose sum is σ = 343403214336. Its totient is φ = 54054819840.

The previous prime is 140205233437. The next prime is 140205233453. The reversal of 140205233440 is 44332502041.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 140205233399 and 140205233408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415729 + ... + 673231.

It is an arithmetic number, because the mean of its divisors is an integer number (3577116816).

Almost surely, 2^140205233440 is an apocalyptic number.

140205233440 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 140205233440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171701607168).

140205233440 is an abundant number, since it is smaller than the sum of its proper divisors (203197980896).

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

140205233440 is a wasteful number, since it uses less digits than its factorization.

140205233440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257642 (or 257634 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 140205233440 its reverse (44332502041), we get a palindrome (184537735481).

The spelling of 140205233440 in words is "one hundred forty billion, two hundred five million, two hundred thirty-three thousand, four hundred forty".