135212245 has 32 divisors (see below), whose sum is σ = 191651328. Its totient is φ = 89641728.

The previous prime is 135212221. The next prime is 135212257. The reversal of 135212245 is 542212531.

It is a cyclic number.

It is not a de Polignac number, because 135212245 - 2²¹ = 133115093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340387 + ... + 340783.

It is an arithmetic number, because the mean of its divisors is an integer number (5989104).

Almost surely, 2^135212245 is an apocalyptic number.

It is an amenable number.

135212245 is a deficient number, since it is larger than the sum of its proper divisors (56439083).

135212245 is a wasteful number, since it uses less digits than its factorization.

135212245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709.

The product of its digits is 2400, while the sum is 25.

The square root of 135212245 is about 11628.0800220845. The cubic root of 135212245 is about 513.2614831223.

Adding to 135212245 its reverse (542212531), we get a palindrome (677424776).

The spelling of 135212245 in words is "one hundred thirty-five million, two hundred twelve thousand, two hundred forty-five".