2040121403 has 4 divisors (see below), whose sum is σ = 2043657720. Its totient is φ = 2036585088.

The previous prime is 2040121399. The next prime is 2040121423. The reversal of 2040121403 is 3041210402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3041210402 = 2 ⋅1520605201.

It is a cyclic number.

It is not a de Polignac number, because 2040121403 - 2² = 2040121399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040121423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1767293 + ... + 1768446.

It is an arithmetic number, because the mean of its divisors is an integer number (510914430).

Almost surely, 2^2040121403 is an apocalyptic number.

2040121403 is a deficient number, since it is larger than the sum of its proper divisors (3536317).

2040121403 is an equidigital number, since it uses as much as digits as its factorization.

2040121403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536316.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2040121403 is about 45167.7030963497. The cubic root of 2040121403 is about 1268.2902992696.

Adding to 2040121403 its reverse (3041210402), we get a palindrome (5081331805).

The spelling of 2040121403 in words is "two billion, forty million, one hundred twenty-one thousand, four hundred three".