135040403 has 2 divisors, whose sum is σ = 135040404. Its totient is φ = 135040402.

The previous prime is 135040379. The next prime is 135040441. The reversal of 135040403 is 304040531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135040403 is a prime.

It is not a weakly prime, because it can be changed into another prime (135040453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67520201 + 67520202.

It is an arithmetic number, because the mean of its divisors is an integer number (67520202).

Almost surely, 2^135040403 is an apocalyptic number.

135040403 is a deficient number, since it is larger than the sum of its proper divisors (1).

135040403 is an equidigital number, since it uses as much as digits as its factorization.

135040403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 135040403 is about 11620.6885768443. The cubic root of 135040403 is about 513.0439553119.

Adding to 135040403 its reverse (304040531), we get a palindrome (439080934).

The spelling of 135040403 in words is "one hundred thirty-five million, forty thousand, four hundred three".