1000040203 has 2 divisors, whose sum is σ = 1000040204. Its totient is φ = 1000040202.

The previous prime is 1000040201. The next prime is 1000040257. The reversal of 1000040203 is 3020400001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000040203 - 2¹ = 1000040201 is a prime.

Together with 1000040201, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1000040203.

It is not a weakly prime, because it can be changed into another prime (1000040201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500020101 + 500020102.

It is an arithmetic number, because the mean of its divisors is an integer number (500020102).

Almost surely, 2^1000040203 is an apocalyptic number.

1000040203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000040203 is an equidigital number, since it uses as much as digits as its factorization.

1000040203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1000040203 is about 31623.4122605389. The cubic root of 1000040203 is about 1000.0134008204.

Adding to 1000040203 its reverse (3020400001), we get a palindrome (4020440204).

The spelling of 1000040203 in words is "one billion, forty thousand, two hundred three".