135042020439 has 16 divisors (see below), whose sum is σ = 189037231872. Its totient is φ = 85585439808.

The previous prime is 135042020387. The next prime is 135042020441. The reversal of 135042020439 is 934020240531.

It is not a de Polignac number, because 135042020439 - 2¹³ = 135042012247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135042020639) 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, 5992222 + ... + 6014715.

It is an arithmetic number, because the mean of its divisors is an integer number (11814826992).

Almost surely, 2^135042020439 is an apocalyptic number.

135042020439 is a deficient number, since it is larger than the sum of its proper divisors (53995211433).

135042020439 is a wasteful number, since it uses less digits than its factorization.

135042020439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12007126.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 135042020439 in words is "one hundred thirty-five billion, forty-two million, twenty thousand, four hundred thirty-nine".