135531240143242 has 8 divisors (see below), whose sum is σ = 203296930859232. Its totient is φ = 67765596523500.

The previous prime is 135531240143237. The next prime is 135531240143279. The reversal of 135531240143242 is 242341042135531.

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

It is a junction number, because it is equal to n+sod(n) for n = 135531240143195 and 135531240143204.

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, 3383934 + ... + 16808137.

It is an arithmetic number, because the mean of its divisors is an integer number (25412116357404).

Almost surely, 2^{135531240143242} is an apocalyptic number.

135531240143242 is a deficient number, since it is larger than the sum of its proper divisors (67765690715990).

135531240143242 is a wasteful number, since it uses less digits than its factorization.

135531240143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23548124.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 135531240143242 its reverse (242341042135531), we get a palindrome (377872282278773).

The spelling of 135531240143242 in words is "one hundred thirty-five trillion, five hundred thirty-one billion, two hundred forty million, one hundred forty-three thousand, two hundred forty-two".