201243120140000 has 120 divisors (see below), whose sum is σ = 499990131011448. Its totient is φ = 79700244800000.

The previous prime is 201243120139981. The next prime is 201243120140047. The reversal of 201243120140000 is 41021342102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 47792654 + ... + 51832653.

Almost surely, 2^{201243120140000} is an apocalyptic number.

201243120140000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201243120140000 is an abundant number, since it is smaller than the sum of its proper divisors (298747010871448).

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

201243120140000 is an equidigital number, since it uses as much as digits as its factorization.

201243120140000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99625438 (or 99625415 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201243120140000 its reverse (41021342102), we get a palindrome (201284141482102).

The spelling of 201243120140000 in words is "two hundred one trillion, two hundred forty-three billion, one hundred twenty million, one hundred forty thousand".