1340542003 has 2 divisors, whose sum is σ = 1340542004. Its totient is φ = 1340542002.

The previous prime is 1340541991. The next prime is 1340542031. The reversal of 1340542003 is 3002450431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340542003 - 2⁵ = 1340541971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340542103) 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 as a sum of consecutive naturals, namely, 670271001 + 670271002.

It is an arithmetic number, because the mean of its divisors is an integer number (670271002).

Almost surely, 2^1340542003 is an apocalyptic number.

1340542003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340542003 is an equidigital number, since it uses as much as digits as its factorization.

1340542003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1340542003 is about 36613.4128838053. The cubic root of 1340542003 is about 1102.6223942221.

Adding to 1340542003 its reverse (3002450431), we get a palindrome (4342992434).

The spelling of 1340542003 in words is "one billion, three hundred forty million, five hundred forty-two thousand, three".