134478 has 24 divisors (see below), whose sum is σ = 302016. Its totient is φ = 43200.

The previous prime is 134471. The next prime is 134489. The reversal of 134478 is 874431.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134471) by changing a digit.

134478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438 + ... + 678.

It is an arithmetic number, because the mean of its divisors is an integer number (12584).

2¹³⁴⁴⁷⁸ is an apocalyptic number.

134478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 134478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151008).

134478 is an abundant number, since it is smaller than the sum of its proper divisors (167538).

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

134478 is a wasteful number, since it uses less digits than its factorization.

134478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 277 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 134478 is about 366.7124213877. The cubic root of 134478 is about 51.2330739267.

The spelling of 134478 in words is "one hundred thirty-four thousand, four hundred seventy-eight".