2140242441021 has 6 divisors (see below), whose sum is σ = 3091461303710. Its totient is φ = 1426828294008.

The previous prime is 2140242440957. The next prime is 2140242441031. The reversal of 2140242441021 is 1201442420412.

2140242441021 is a `hidden beast` number, since 2 + 1 + 4 + 0 + 242 + 4 + 410 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1419288612921 + 720953828100 = 1191339^2 + 849090^2 .

It is not a de Polignac number, because 2140242441021 - 2⁶ = 2140242440957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140242441031) 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 5 ways as a sum of consecutive naturals, for example, 118902357826 + ... + 118902357843.

Almost surely, 2^{2140242441021} is an apocalyptic number.

It is an amenable number.

2140242441021 is a deficient number, since it is larger than the sum of its proper divisors (951218862689).

2140242441021 is a wasteful number, since it uses less digits than its factorization.

2140242441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237804715675 (or 237804715672 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 2140242441021 its reverse (1201442420412), we get a palindrome (3341684861433).

The spelling of 2140242441021 in words is "two trillion, one hundred forty billion, two hundred forty-two million, four hundred forty-one thousand, twenty-one".