135139403 has 24 divisors (see below), whose sum is σ = 162543024. Its totient is φ = 111955200.

The previous prime is 135139397. The next prime is 135139423. The reversal of 135139403 is 304931531.

It is not a de Polignac number, because 135139403 - 2¹⁶ = 135073867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135139423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274988 + ... + 275478.

It is an arithmetic number, because the mean of its divisors is an integer number (6772626).

Almost surely, 2^135139403 is an apocalyptic number.

135139403 is a deficient number, since it is larger than the sum of its proper divisors (27403621).

135139403 is a wasteful number, since it uses less digits than its factorization.

135139403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 135139403 is about 11624.9474407414. The cubic root of 135139403 is about 513.1692979095.

The spelling of 135139403 in words is "one hundred thirty-five million, one hundred thirty-nine thousand, four hundred three".