2126204403 has 4 divisors (see below), whose sum is σ = 2834939208. Its totient is φ = 1417469600.

The previous prime is 2126204389. The next prime is 2126204407. The reversal of 2126204403 is 3044026212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2126204403 - 2²⁰ = 2125155827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2126204407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354367398 + ... + 354367403.

It is an arithmetic number, because the mean of its divisors is an integer number (708734802).

Almost surely, 2^2126204403 is an apocalyptic number.

2126204403 is a deficient number, since it is larger than the sum of its proper divisors (708734805).

2126204403 is an equidigital number, since it uses as much as digits as its factorization.

2126204403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708734804.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 2126204403 is about 46110.7840206605. The cubic root of 2126204403 is about 1285.8836403776.

The spelling of 2126204403 in words is "two billion, one hundred twenty-six million, two hundred four thousand, four hundred three".