135138534 has 8 divisors (see below), whose sum is σ = 270277080. Its totient is φ = 45046176.

The previous prime is 135138529. The next prime is 135138587. The reversal of 135138534 is 435831531.

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

135138534 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 135138495 and 135138504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11261539 + ... + 11261550.

It is an arithmetic number, because the mean of its divisors is an integer number (33784635).

Almost surely, 2^135138534 is an apocalyptic number.

135138534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135138534 is a wasteful number, since it uses less digits than its factorization.

135138534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22523094.

The product of its digits is 21600, while the sum is 33.

The square root of 135138534 is about 11624.9100641682. The cubic root of 135138534 is about 513.1681979464.

The spelling of 135138534 in words is "one hundred thirty-five million, one hundred thirty-eight thousand, five hundred thirty-four".