140520212420 has 48 divisors (see below), whose sum is σ = 339674805120. Its totient is φ = 47831745024.

The previous prime is 140520212377. The next prime is 140520212429. The reversal of 140520212420 is 24212025041.

It is not an unprimeable number, because it can be changed into a prime (140520212429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3591029 + ... + 3629948.

It is an arithmetic number, because the mean of its divisors is an integer number (7076558440).

Almost surely, 2^140520212420 is an apocalyptic number.

140520212420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140520212420 is an abundant number, since it is smaller than the sum of its proper divisors (199154592700).

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

140520212420 is a wasteful number, since it uses less digits than its factorization.

140520212420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221132 (or 7221130 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 140520212420 its reverse (24212025041), we get a palindrome (164732237461).

The spelling of 140520212420 in words is "one hundred forty billion, five hundred twenty million, two hundred twelve thousand, four hundred twenty".