135042005 has 16 divisors (see below), whose sum is σ = 186620544. Its totient is φ = 91890240.

The previous prime is 135042001. The next prime is 135042007. The reversal of 135042005 is 500240531.

It is not a de Polignac number, because 135042005 - 2² = 135042001 is a prime.

It is a super-2 number, since 2×135042005² = 36472686228840050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135042001) 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, 10142 + ... + 19311.

It is an arithmetic number, because the mean of its divisors is an integer number (11663784).

Almost surely, 2^135042005 is an apocalyptic number.

It is an amenable number.

135042005 is a deficient number, since it is larger than the sum of its proper divisors (51578539).

135042005 is a wasteful number, since it uses less digits than its factorization.

135042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29596.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 135042005 is about 11620.7575054297. The cubic root of 135042005 is about 513.0459840706.

Adding to 135042005 its reverse (500240531), we get a palindrome (635282536).

The spelling of 135042005 in words is "one hundred thirty-five million, forty-two thousand, five".