134123563 has 4 divisors (see below), whose sum is σ = 153284080. Its totient is φ = 114963048.

The previous prime is 134123551. The next prime is 134123581. The reversal of 134123563 is 365321431.

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 134123563 - 2⁵ = 134123531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134123513) 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, 9580248 + ... + 9580261.

It is an arithmetic number, because the mean of its divisors is an integer number (38321020).

Almost surely, 2^134123563 is an apocalyptic number.

134123563 is a deficient number, since it is larger than the sum of its proper divisors (19160517).

134123563 is an equidigital number, since it uses as much as digits as its factorization.

134123563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19160516.

The product of its digits is 6480, while the sum is 28.

The square root of 134123563 is about 11581.1727817177. The cubic root of 134123563 is about 511.8802349979.

Adding to 134123563 its reverse (365321431), we get a palindrome (499444994).

The spelling of 134123563 in words is "one hundred thirty-four million, one hundred twenty-three thousand, five hundred sixty-three".