135440241423 has 16 divisors (see below), whose sum is σ = 181372421472. Its totient is φ = 89900928000.

The previous prime is 135440241407. The next prime is 135440241481. The reversal of 135440241423 is 324142044531.

It is not a de Polignac number, because 135440241423 - 2⁴ = 135440241407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135440201423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4308603 + ... + 4339923.

It is an arithmetic number, because the mean of its divisors is an integer number (11335776342).

Almost surely, 2^135440241423 is an apocalyptic number.

135440241423 is a deficient number, since it is larger than the sum of its proper divisors (45932180049).

135440241423 is a wasteful number, since it uses less digits than its factorization.

135440241423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37546.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 135440241423 its reverse (324142044531), we get a palindrome (459582285954).

The spelling of 135440241423 in words is "one hundred thirty-five billion, four hundred forty million, two hundred forty-one thousand, four hundred twenty-three".