135311242 has 8 divisors (see below), whose sum is σ = 221418432. Its totient is φ = 61505100.

The previous prime is 135311213. The next prime is 135311263. The reversal of 135311242 is 242113531.

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: 6150511 = 135311242 / (1 + 3 + 5 + 3 + 1 + 1 + 2 + 4 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075234 + ... + 3075277.

It is an arithmetic number, because the mean of its divisors is an integer number (27677304).

Almost surely, 2^135311242 is an apocalyptic number.

135311242 is a deficient number, since it is larger than the sum of its proper divisors (86107190).

135311242 is a wasteful number, since it uses less digits than its factorization.

135311242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150524.

The product of its digits is 720, while the sum is 22.

The square root of 135311242 is about 11632.3360508541. The cubic root of 135311242 is about 513.3867157431.

Adding to 135311242 its reverse (242113531), we get a palindrome (377424773).

The spelling of 135311242 in words is "one hundred thirty-five million, three hundred eleven thousand, two hundred forty-two".