134878671 has 12 divisors (see below), whose sum is σ = 196613560. Its totient is φ = 89093520.

The previous prime is 134878621. The next prime is 134878687. The reversal of 134878671 is 176878431.

It is not a de Polignac number, because 134878671 - 2¹⁵ = 134845903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134878621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67765 + ... + 69726.

Almost surely, 2^134878671 is an apocalyptic number.

134878671 is a deficient number, since it is larger than the sum of its proper divisors (61734889).

134878671 is a wasteful number, since it uses less digits than its factorization.

134878671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137606 (or 137603 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 134878671 is about 11613.7276961362. The cubic root of 134878671 is about 512.8390567023.

The spelling of 134878671 in words is "one hundred thirty-four million, eight hundred seventy-eight thousand, six hundred seventy-one".