134005247 has 4 divisors (see below), whose sum is σ = 134482416. Its totient is φ = 133528080.

The previous prime is 134005217. The next prime is 134005303. The reversal of 134005247 is 742500431.

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 134005247 - 2¹⁴ = 133988863 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134005217) 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, 238163 + ... + 238724.

It is an arithmetic number, because the mean of its divisors is an integer number (33620604).

Almost surely, 2^134005247 is an apocalyptic number.

134005247 is a deficient number, since it is larger than the sum of its proper divisors (477169).

134005247 is an equidigital number, since it uses as much as digits as its factorization.

134005247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477168.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 134005247 is about 11576.0635364531. The cubic root of 134005247 is about 511.7296737348.

Adding to 134005247 its reverse (742500431), we get a palindrome (876505678).

The spelling of 134005247 in words is "one hundred thirty-four million, five thousand, two hundred forty-seven".