140520121452520 has 64 divisors (see below), whose sum is σ = 321225953238720. Its totient is φ = 55311021663744.

The previous prime is 140520121452479. The next prime is 140520121452539. The reversal of 140520121452520 is 25254121025041.

It is a super-2 number, since 2×140520121452520² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24955342 + ... + 30063421.

It is an arithmetic number, because the mean of its divisors is an integer number (5019155519355).

Almost surely, 2^{140520121452520} is an apocalyptic number.

140520121452520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140520121452520 is an abundant number, since it is smaller than the sum of its proper divisors (180705831786200).

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

140520121452520 is a wasteful number, since it uses less digits than its factorization.

140520121452520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55019794 (or 55019790 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

Adding to 140520121452520 its reverse (25254121025041), we get a palindrome (165774242477561).

The spelling of 140520121452520 in words is "one hundred forty trillion, five hundred twenty billion, one hundred twenty-one million, four hundred fifty-two thousand, five hundred twenty".