134878523 has 16 divisors (see below), whose sum is σ = 148040256. Its totient is φ = 122135040.

The previous prime is 134878477. The next prime is 134878567. The reversal of 134878523 is 325878431.

It is a cyclic number.

It is not a de Polignac number, because 134878523 - 2⁸ = 134878267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134878423) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 294911 + ... + 295367.

It is an arithmetic number, because the mean of its divisors is an integer number (9252516).

Almost surely, 2^134878523 is an apocalyptic number.

134878523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

134878523 is a deficient number, since it is larger than the sum of its proper divisors (13161733).

134878523 is a wasteful number, since it uses less digits than its factorization.

134878523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854.

The product of its digits is 161280, while the sum is 41.

The square root of 134878523 is about 11613.7213243646. The cubic root of 134878523 is about 512.8388691258.

The spelling of 134878523 in words is "one hundred thirty-four million, eight hundred seventy-eight thousand, five hundred twenty-three".