2003143426 has 4 divisors (see below), whose sum is σ = 3004715142. Its totient is φ = 1001571712.

The previous prime is 2003143357. The next prime is 2003143451. The reversal of 2003143426 is 6243413002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6243413002 = 2 ⋅3121706501.

It can be written as a sum of positive squares in only one way, i.e., 1213477225 + 789666201 = 34835^2 + 28101^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2003143426.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500785855 + ... + 500785858.

Almost surely, 2^2003143426 is an apocalyptic number.

2003143426 is a deficient number, since it is larger than the sum of its proper divisors (1001571716).

2003143426 is a wasteful number, since it uses less digits than its factorization.

2003143426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001571715.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2003143426 is about 44756.4903226337. The cubic root of 2003143426 is about 1260.5807824764.

Adding to 2003143426 its reverse (6243413002), we get a palindrome (8246556428).

The spelling of 2003143426 in words is "two billion, three million, one hundred forty-three thousand, four hundred twenty-six".