135212242 has 8 divisors (see below), whose sum is σ = 221256432. Its totient is φ = 61460100.

The previous prime is 135212221. The next prime is 135212257. The reversal of 135212242 is 242212531.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 6146011 = 135212242 / (1 + 3 + 5 + 2 + 1 + 2 + 2 + 4 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3072984 + ... + 3073027.

It is an arithmetic number, because the mean of its divisors is an integer number (27657054).

Almost surely, 2^135212242 is an apocalyptic number.

135212242 is a deficient number, since it is larger than the sum of its proper divisors (86044190).

135212242 is a wasteful number, since it uses less digits than its factorization.

135212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146024.

The product of its digits is 960, while the sum is 22.

The square root of 135212242 is about 11628.0798930864. The cubic root of 135212242 is about 513.2614793263.

Adding to 135212242 its reverse (242212531), we get a palindrome (377424773).

The spelling of 135212242 in words is "one hundred thirty-five million, two hundred twelve thousand, two hundred forty-two".