135205201 has 8 divisors (see below), whose sum is σ = 144365760. Its totient is φ = 126318192.

The previous prime is 135205183. The next prime is 135205207. The reversal of 135205201 is 102502531.

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

It is a cyclic number.

It is not a de Polignac number, because 135205201 - 2¹¹ = 135203153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135205207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67366 + ... + 69343.

It is an arithmetic number, because the mean of its divisors is an integer number (18045720).

Almost surely, 2^135205201 is an apocalyptic number.

It is an amenable number.

135205201 is a deficient number, since it is larger than the sum of its proper divisors (9160559).

135205201 is a wasteful number, since it uses less digits than its factorization.

135205201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136775.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 135205201 is about 11627.7771306471. Note that the first 3 decimals coincide. The cubic root of 135205201 is about 513.2525700324.

Adding to 135205201 its reverse (102502531), we get a palindrome (237707732).

It can be divided in two parts, 13520 and 5201, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 135205201 in words is "one hundred thirty-five million, two hundred five thousand, two hundred one".