135423665 has 8 divisors (see below), whose sum is σ = 175009128. Its totient is φ = 100005120.

The previous prime is 135423653. The next prime is 135423667. The reversal of 135423665 is 566324531.

It can be written as a sum of positive squares in 4 ways, for example, as 10699441 + 124724224 = 3271^2 + 11168^2 .

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

It is not a de Polignac number, because 135423665 - 2⁶ = 135423601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135423667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041656 + ... + 1041785.

It is an arithmetic number, because the mean of its divisors is an integer number (21876141).

Almost surely, 2^135423665 is an apocalyptic number.

It is an amenable number.

135423665 is a deficient number, since it is larger than the sum of its proper divisors (39585463).

135423665 is a wasteful number, since it uses less digits than its factorization.

135423665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083459.

The product of its digits is 64800, while the sum is 35.

The square root of 135423665 is about 11637.1673958915. The cubic root of 135423665 is about 513.5288583981.

The spelling of 135423665 in words is "one hundred thirty-five million, four hundred twenty-three thousand, six hundred sixty-five".