135239903 has 2 divisors, whose sum is σ = 135239904. Its totient is φ = 135239902.

The previous prime is 135239893. The next prime is 135239917. The reversal of 135239903 is 309932531.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135239903 - 2⁸ = 135239647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135239953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67619951 + 67619952.

It is an arithmetic number, because the mean of its divisors is an integer number (67619952).

Almost surely, 2^135239903 is an apocalyptic number.

135239903 is a deficient number, since it is larger than the sum of its proper divisors (1).

135239903 is an equidigital number, since it uses as much as digits as its factorization.

135239903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 135239903 is about 11629.2692375746. The cubic root of 135239903 is about 513.2964770394.

The spelling of 135239903 in words is "one hundred thirty-five million, two hundred thirty-nine thousand, nine hundred three".