140137242440 has 128 divisors (see below), whose sum is σ = 342494853120. Its totient is φ = 51298176000.

The previous prime is 140137242439. The next prime is 140137242449. The reversal of 140137242440 is 44242731041.

It is a super-3 number, since 3×140137242440³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140137242397 and 140137242406.

It is not an unprimeable number, because it can be changed into a prime (140137242449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31482215 + ... + 31486665.

It is an arithmetic number, because the mean of its divisors is an integer number (2675741040).

Almost surely, 2^140137242440 is an apocalyptic number.

140137242440 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 140137242440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171247426560).

140137242440 is an abundant number, since it is smaller than the sum of its proper divisors (202357610680).

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

140137242440 is a wasteful number, since it uses less digits than its factorization.

140137242440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983 (or 4979 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

Adding to 140137242440 its reverse (44242731041), we get a palindrome (184379973481).

The spelling of 140137242440 in words is "one hundred forty billion, one hundred thirty-seven million, two hundred forty-two thousand, four hundred forty".