134871643 has 4 divisors (see below), whose sum is σ = 134899600. Its totient is φ = 134843688.

The previous prime is 134871641. The next prime is 134871683. The reversal of 134871643 is 346178431.

134871643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 134871643 - 2¹ = 134871641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134871641) 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, 4680 + ... + 17077.

It is an arithmetic number, because the mean of its divisors is an integer number (33724900).

Almost surely, 2^134871643 is an apocalyptic number.

134871643 is a deficient number, since it is larger than the sum of its proper divisors (27957).

134871643 is an equidigital number, since it uses as much as digits as its factorization.

134871643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27956.

The product of its digits is 48384, while the sum is 37.

The square root of 134871643 is about 11613.4251192316. The cubic root of 134871643 is about 512.8301492018.

The spelling of 134871643 in words is "one hundred thirty-four million, eight hundred seventy-one thousand, six hundred forty-three".