135213249 has 8 divisors (see below), whose sum is σ = 180344320. Its totient is φ = 90112176.

The previous prime is 135213241. The next prime is 135213259. The reversal of 135213249 is 942312531.

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

It is not a de Polignac number, because 135213249 - 2³ = 135213241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135213241) 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, 7059 + ... + 17895.

It is an arithmetic number, because the mean of its divisors is an integer number (22543040).

Almost surely, 2^135213249 is an apocalyptic number.

It is an amenable number.

135213249 is a deficient number, since it is larger than the sum of its proper divisors (45131071).

135213249 is a wasteful number, since it uses less digits than its factorization.

135213249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14999.

The product of its digits is 6480, while the sum is 30.

The square root of 135213249 is about 11628.1231933619. The cubic root of 135213249 is about 513.2627535034.

The spelling of 135213249 in words is "one hundred thirty-five million, two hundred thirteen thousand, two hundred forty-nine".