135006405 has 8 divisors (see below), whose sum is σ = 216010272. Its totient is φ = 72003408.

The previous prime is 135006383. The next prime is 135006427. The reversal of 135006405 is 504600531.

It is an interprime number because it is at equal distance from previous prime (135006383) and next prime (135006427).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135006405 - 2¹¹ = 135004357 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4500199 + ... + 4500228.

It is an arithmetic number, because the mean of its divisors is an integer number (27001284).

Almost surely, 2^135006405 is an apocalyptic number.

135006405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135006405 is a deficient number, since it is larger than the sum of its proper divisors (81003867).

135006405 is an equidigital number, since it uses as much as digits as its factorization.

135006405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000435.

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

The square root of 135006405 is about 11619.2256626679. The cubic root of 135006405 is about 513.0008967606. Note that the first 3 decimals are identical.

Adding to 135006405 its reverse (504600531), we get a palindrome (639606936).

The spelling of 135006405 in words is "one hundred thirty-five million, six thousand, four hundred five".