120021340140 has 144 divisors (see below), whose sum is σ = 406591025568. Its totient is φ = 29543698944.

The previous prime is 120021340099. The next prime is 120021340147. The reversal of 120021340140 is 41043120021.

120021340140 is a `hidden beast` number, since 1 + 200 + 21 + 3 + 401 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (120021340147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 886657 + ... + 1013016.

Almost surely, 2^120021340140 is an apocalyptic number.

120021340140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021340140 is an abundant number, since it is smaller than the sum of its proper divisors (286569685428).

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

120021340140 is a wasteful number, since it uses less digits than its factorization.

120021340140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899710 (or 1899696 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 120021340140 its reverse (41043120021), we get a palindrome (161064460161).

The spelling of 120021340140 in words is "one hundred twenty billion, twenty-one million, three hundred forty thousand, one hundred forty".