134640135 has 24 divisors (see below), whose sum is σ = 266716320. Its totient is φ = 61549632.

The previous prime is 134640131. The next prime is 134640139. The reversal of 134640135 is 531046431.

134640135 is a `hidden beast` number, since 1 + 3 + 4 + 640 + 13 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (134640131) and next prime (134640139).

It is not a de Polignac number, because 134640135 - 2² = 134640131 is a prime.

It is a super-3 number, since 3×134640135³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 134640099 and 134640108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134640131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213400 + ... + 214029.

It is an arithmetic number, because the mean of its divisors is an integer number (11113180).

Almost surely, 2^134640135 is an apocalyptic number.

134640135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

134640135 is a deficient number, since it is larger than the sum of its proper divisors (132076185).

134640135 is a wasteful number, since it uses less digits than its factorization.

134640135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427447 (or 427444 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 134640135 is about 11603.4535807233. The cubic root of 134640135 is about 512.5365557903.

Adding to 134640135 its reverse (531046431), we get a palindrome (665686566).

The spelling of 134640135 in words is "one hundred thirty-four million, six hundred forty thousand, one hundred thirty-five".