134191287 has 6 divisors (see below), whose sum is σ = 193831872. Its totient is φ = 89460852.

The previous prime is 134191273. The next prime is 134191289. The reversal of 134191287 is 782191431.

It is a happy number.

It is not a de Polignac number, because 134191287 - 2¹⁰ = 134190263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134191289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7455063 + ... + 7455080.

It is an arithmetic number, because the mean of its divisors is an integer number (32305312).

Almost surely, 2^134191287 is an apocalyptic number.

134191287 is a deficient number, since it is larger than the sum of its proper divisors (59640585).

134191287 is a wasteful number, since it uses less digits than its factorization.

134191287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14910149 (or 14910146 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 134191287 is about 11584.0962962158. The cubic root of 134191287 is about 511.9663763218.

It can be divided in two parts, 13419 and 1287, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 134191287 in words is "one hundred thirty-four million, one hundred ninety-one thousand, two hundred eighty-seven".