134878047 has 4 divisors (see below), whose sum is σ = 179837400. Its totient is φ = 89918696.

The previous prime is 134878031. The next prime is 134878091. The reversal of 134878047 is 740878431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 134878047 - 2⁴ = 134878031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134878027) 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, 22479672 + ... + 22479677.

It is an arithmetic number, because the mean of its divisors is an integer number (44959350).

Almost surely, 2^134878047 is an apocalyptic number.

134878047 is a deficient number, since it is larger than the sum of its proper divisors (44959353).

134878047 is an equidigital number, since it uses as much as digits as its factorization.

134878047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44959352.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 134878047 is about 11613.7008313457. The cubic root of 134878047 is about 512.8382658383.

The spelling of 134878047 in words is "one hundred thirty-four million, eight hundred seventy-eight thousand, forty-seven".