140121532252518 has 16 divisors (see below), whose sum is σ = 280252905878640. Its totient is φ = 46705537188576.

The previous prime is 140121532252459. The next prime is 140121532252519. The reversal of 140121532252518 is 815252235121041.

It is a self number, because there is not a number n which added to its sum of digits gives 140121532252518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140121532252519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409872133 + ... + 410213856.

It is an arithmetic number, because the mean of its divisors is an integer number (17515806617415).

Almost surely, 2^{140121532252518} is an apocalyptic number.

140121532252518 is an abundant number, since it is smaller than the sum of its proper divisors (140131373626122).

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

140121532252518 is a wasteful number, since it uses less digits than its factorization.

140121532252518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820114471.

The product of its (nonzero) digits is 192000, while the sum is 42.

Adding to 140121532252518 its reverse (815252235121041), we get a palindrome (955373767373559).

The spelling of 140121532252518 in words is "one hundred forty trillion, one hundred twenty-one billion, five hundred thirty-two million, two hundred fifty-two thousand, five hundred eighteen".