135142404439 has 4 divisors (see below), whose sum is σ = 154448462224. Its totient is φ = 115836346656.

The previous prime is 135142404421. The next prime is 135142404541. The reversal of 135142404439 is 934404241531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934404241531 = 211 ⋅4428456121.

It is a cyclic number.

It is not a de Polignac number, because 135142404439 - 2⁵ = 135142404407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135142404139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9653028882 + ... + 9653028895.

It is an arithmetic number, because the mean of its divisors is an integer number (38612115556).

Almost surely, 2^135142404439 is an apocalyptic number.

135142404439 is a deficient number, since it is larger than the sum of its proper divisors (19306057785).

135142404439 is an equidigital number, since it uses as much as digits as its factorization.

135142404439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19306057784.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 135142404439 in words is "one hundred thirty-five billion, one hundred forty-two million, four hundred four thousand, four hundred thirty-nine".