135542305 has 8 divisors (see below), whose sum is σ = 165317544. Its totient is φ = 106656000.

The previous prime is 135542279. The next prime is 135542311. The reversal of 135542305 is 503245531.

It can be written as a sum of positive squares in 4 ways, for example, as 6765201 + 128777104 = 2601^2 + 11348^2 .

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

It is not a de Polignac number, because 135542305 - 2⁹ = 135541793 is a prime.

It is a Duffinian 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, 221896 + ... + 222505.

It is an arithmetic number, because the mean of its divisors is an integer number (20664693).

Almost surely, 2^135542305 is an apocalyptic number.

It is an amenable number.

135542305 is a deficient number, since it is larger than the sum of its proper divisors (29775239).

135542305 is an equidigital number, since it uses as much as digits as its factorization.

135542305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444467.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 135542305 is about 11642.2637403557. The cubic root of 135542305 is about 513.6787762650.

Adding to 135542305 its reverse (503245531), we get a palindrome (638787836).

It can be divided in two parts, 1355 and 42305, that added together give a triangular number (43660 = T₂₉₅).

The spelling of 135542305 in words is "one hundred thirty-five million, five hundred forty-two thousand, three hundred five".