2040421121 has 8 divisors (see below), whose sum is σ = 2136214080. Its totient is φ = 1946323792.

The previous prime is 2040421099. The next prime is 2040421127. The reversal of 2040421121 is 1211240402.

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 2040421121 - 2¹⁰ = 2040420097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2040421121.

It is not an unprimeable number, because it can be changed into a prime (2040421127) 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, 421445 + ... + 426258.

It is an arithmetic number, because the mean of its divisors is an integer number (267026760).

Almost surely, 2^2040421121 is an apocalyptic number.

It is an amenable number.

2040421121 is a deficient number, since it is larger than the sum of its proper divisors (95792959).

2040421121 is an equidigital number, since it uses as much as digits as its factorization.

2040421121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847815.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2040421121 is about 45171.0208098068. The cubic root of 2040421121 is about 1268.3524051844.

Adding to 2040421121 its reverse (1211240402), we get a palindrome (3251661523).

The spelling of 2040421121 in words is "two billion, forty million, four hundred twenty-one thousand, one hundred twenty-one".