134123784 has 16 divisors (see below), whose sum is σ = 335309520. Its totient is φ = 44707920.

The previous prime is 134123777. The next prime is 134123789. The reversal of 134123784 is 487321431.

It is not an unprimeable number, because it can be changed into a prime (134123789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2794222 + ... + 2794269.

It is an arithmetic number, because the mean of its divisors is an integer number (20956845).

Almost surely, 2^134123784 is an apocalyptic number.

It is an amenable number.

134123784 is an abundant number, since it is smaller than the sum of its proper divisors (201185736).

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

134123784 is a wasteful number, since it uses less digits than its factorization.

134123784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5588500 (or 5588496 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 134123784 is about 11581.1823230618. The cubic root of 134123784 is about 511.8805161453.

The spelling of 134123784 in words is "one hundred thirty-four million, one hundred twenty-three thousand, seven hundred eighty-four".