134915971 has 4 divisors (see below), whose sum is σ = 134977752. Its totient is φ = 134854192.

The previous prime is 134915947. The next prime is 134915981. The reversal of 134915971 is 179519431.

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 134915971 - 2¹⁹ = 134391683 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134915981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27490 + ... + 32023.

It is an arithmetic number, because the mean of its divisors is an integer number (33744438).

Almost surely, 2^134915971 is an apocalyptic number.

134915971 is a deficient number, since it is larger than the sum of its proper divisors (61781).

134915971 is an equidigital number, since it uses as much as digits as its factorization.

134915971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61780.

The product of its digits is 34020, while the sum is 40.

The square root of 134915971 is about 11615.3334433412. Note that the first 3 decimals coincide. The cubic root of 134915971 is about 512.8863266761.

The spelling of 134915971 in words is "one hundred thirty-four million, nine hundred fifteen thousand, nine hundred seventy-one".