135240026131 has 8 divisors (see below), whose sum is σ = 154780520544. Its totient is φ = 115754654400.

The previous prime is 135240026093. The next prime is 135240026153. The reversal of 135240026131 is 131620042531.

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

It is not a de Polignac number, because 135240026131 - 2⁷ = 135240026003 is a prime.

It is a super-2 number, since 2×135240026131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135240026131.

It is not an unprimeable number, because it can be changed into a prime (135240026161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13775410 + ... + 13785223.

It is an arithmetic number, because the mean of its divisors is an integer number (19347565068).

Almost surely, 2^135240026131 is an apocalyptic number.

135240026131 is a deficient number, since it is larger than the sum of its proper divisors (19540494413).

135240026131 is an equidigital number, since it uses as much as digits as its factorization.

135240026131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27561341.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 135240026131 its reverse (131620042531), we get a palindrome (266860068662).

The spelling of 135240026131 in words is "one hundred thirty-five billion, two hundred forty million, twenty-six thousand, one hundred thirty-one".