135142120465 has 16 divisors (see below), whose sum is σ = 176937125760. Its totient is φ = 98271953920.

The previous prime is 135142120457. The next prime is 135142120493. The reversal of 135142120465 is 564021241531.

It is not a de Polignac number, because 135142120465 - 2³ = 135142120457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135142120465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256881 + ... + 579889.

It is an arithmetic number, because the mean of its divisors is an integer number (11058570360).

Almost surely, 2^135142120465 is an apocalyptic number.

It is an amenable number.

135142120465 is a deficient number, since it is larger than the sum of its proper divisors (41795005295).

135142120465 is a wasteful number, since it uses less digits than its factorization.

135142120465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330632.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 135142120465 its reverse (564021241531), we get a palindrome (699163361996).

The spelling of 135142120465 in words is "one hundred thirty-five billion, one hundred forty-two million, one hundred twenty thousand, four hundred sixty-five".