134478417 has 4 divisors (see below), whose sum is σ = 179304560. Its totient is φ = 89652276.

The previous prime is 134478397. The next prime is 134478419. The reversal of 134478417 is 714874431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 134478417 - 2⁶ = 134478353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134478419) 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, 22413067 + ... + 22413072.

It is an arithmetic number, because the mean of its divisors is an integer number (44826140).

Almost surely, 2^134478417 is an apocalyptic number.

It is an amenable number.

134478417 is a deficient number, since it is larger than the sum of its proper divisors (44826143).

134478417 is an equidigital number, since it uses as much as digits as its factorization.

134478417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44826142.

The product of its digits is 75264, while the sum is 39.

The square root of 134478417 is about 11596.4829582076. The cubic root of 134478417 is about 512.3312688249.

The spelling of 134478417 in words is "one hundred thirty-four million, four hundred seventy-eight thousand, four hundred seventeen".