2003120843 has 2 divisors, whose sum is σ = 2003120844. Its totient is φ = 2003120842.

The previous prime is 2003120813. The next prime is 2003120891. The reversal of 2003120843 is 3480213002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2003120843 - 2¹⁴ = 2003104459 is a prime.

It is a super-2 number, since 2×2003120843² = 8024986223322061298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2003120813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001560421 + 1001560422.

It is an arithmetic number, because the mean of its divisors is an integer number (1001560422).

Almost surely, 2^2003120843 is an apocalyptic number.

2003120843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003120843 is an equidigital number, since it uses as much as digits as its factorization.

2003120843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2003120843 is about 44756.2380344908. The cubic root of 2003120843 is about 1260.5760452881.

Adding to 2003120843 its reverse (3480213002), we get a palindrome (5483333845).

The spelling of 2003120843 in words is "two billion, three million, one hundred twenty thousand, eight hundred forty-three".