135423017 has 4 divisors (see below), whose sum is σ = 136665540. Its totient is φ = 134180496.

The previous prime is 135423007. The next prime is 135423047. The reversal of 135423017 is 710324531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62900761 + 72522256 = 7931^2 + 8516^2 .

It is a cyclic number.

It is not a de Polignac number, because 135423017 - 2¹⁸ = 135160873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135423007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621098 + ... + 621315.

It is an arithmetic number, because the mean of its divisors is an integer number (34166385).

Almost surely, 2^135423017 is an apocalyptic number.

It is an amenable number.

135423017 is a deficient number, since it is larger than the sum of its proper divisors (1242523).

135423017 is a wasteful number, since it uses less digits than its factorization.

135423017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242522.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 135423017 is about 11637.1395540313. The cubic root of 135423017 is about 513.5280393211.

Adding to 135423017 its reverse (710324531), we get a palindrome (845747548).

The spelling of 135423017 in words is "one hundred thirty-five million, four hundred twenty-three thousand, seventeen".