2140442121 has 8 divisors (see below), whose sum is σ = 2952334080. Its totient is φ = 1377755792.

The previous prime is 2140442081. The next prime is 2140442141. The reversal of 2140442121 is 1212440412.

2140442121 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2140442121 - 2⁹ = 2140441609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2140442141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12301305 + ... + 12301478.

It is an arithmetic number, because the mean of its divisors is an integer number (369041760).

Almost surely, 2^2140442121 is an apocalyptic number.

It is an amenable number.

2140442121 is a deficient number, since it is larger than the sum of its proper divisors (811891959).

2140442121 is a wasteful number, since it uses less digits than its factorization.

2140442121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24602815.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2140442121 is about 46264.9124175114. The cubic root of 2140442121 is about 1288.7474814612.

Adding to 2140442121 its reverse (1212440412), we get a palindrome (3352882533).

The spelling of 2140442121 in words is "two billion, one hundred forty million, four hundred forty-two thousand, one hundred twenty-one".