134871784 has 8 divisors (see below), whose sum is σ = 252884610. Its totient is φ = 67435888.

The previous prime is 134871773. The next prime is 134871787. The reversal of 134871784 is 487178431.

It can be written as a sum of positive squares in only one way, i.e., 81902500 + 52969284 = 9050^2 + 7278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 134871784.

It is not an unprimeable number, because it can be changed into a prime (134871787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8429479 + ... + 8429494.

Almost surely, 2^134871784 is an apocalyptic number.

It is an amenable number.

134871784 is a deficient number, since it is larger than the sum of its proper divisors (118012826).

134871784 is a wasteful number, since it uses less digits than its factorization.

134871784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16858979 (or 16858975 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 134871784 is about 11613.4311897906. The cubic root of 134871784 is about 512.8303279125.

The spelling of 134871784 in words is "one hundred thirty-four million, eight hundred seventy-one thousand, seven hundred eighty-four".