135132405 has 32 divisors (see below), whose sum is σ = 229765248. Its totient is φ = 67584000.

The previous prime is 135132397. The next prime is 135132409. The reversal of 135132405 is 504231531.

It is not a de Polignac number, because 135132405 - 2³ = 135132397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135132409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83605 + ... + 85205.

It is an arithmetic number, because the mean of its divisors is an integer number (7180164).

Almost surely, 2^135132405 is an apocalyptic number.

135132405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135132405 is a deficient number, since it is larger than the sum of its proper divisors (94632843).

135132405 is a wasteful number, since it uses less digits than its factorization.

135132405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 135132405 is about 11624.6464462365. The cubic root of 135132405 is about 513.1604398448.

Adding to 135132405 its reverse (504231531), we get a palindrome (639363936).

The spelling of 135132405 in words is "one hundred thirty-five million, one hundred thirty-two thousand, four hundred five".