140520540240 has 60 divisors (see below), whose sum is σ = 471914816724. Its totient is φ = 37472143872.

The previous prime is 140520540217. The next prime is 140520540241. The reversal of 140520540240 is 42045025041.

140520540240 is a `hidden beast` number, since 14 + 0 + 5 + 205 + 402 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22618956816 + 117901583424 = 150396^2 + 343368^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-3 number, since 3×140520540240³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140520540241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97582989 + ... + 97584428.

Almost surely, 2^140520540240 is an apocalyptic number.

140520540240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140520540240 is an abundant number, since it is smaller than the sum of its proper divisors (331394276484).

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

140520540240 is a wasteful number, since it uses less digits than its factorization.

140520540240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195167436 (or 195167427 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 140520540240 its reverse (42045025041), we get a palindrome (182565565281).

The spelling of 140520540240 in words is "one hundred forty billion, five hundred twenty million, five hundred forty thousand, two hundred forty".