134569 has 4 divisors (see below), whose sum is σ = 138244.
Its totient is φ = 130896.
The previous prime is 134513. The next prime is 134581. The reversal of 134569 is 965431.
It can be divided in two parts, 13456 and 9, that multiplied together give a square (121104 = 3482).
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 965431 = 227 ⋅4253.
It can be written as a sum of positive squares in 2 ways, for example, as 56169 + 78400 = 237^2 + 280^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-134569 is a prime.
It is a super-2 number, since 2×1345692 = 36217631522, which contains 22 as substring.
It is a Duffinian number.
It is a plaindrome in base 10.
It is not an unprimeable number, because it can be changed into a prime (134269) 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, 1782 + ... + 1855.
It is an arithmetic number, because the mean of its divisors is an integer number (34561).
2134569 is an apocalyptic number.
It is an amenable number.
134569 is a deficient number, since it is larger than the sum of its proper divisors (3675).
134569 is an equidigital number, since it uses as much as digits as its factorization.
134569 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3674.
The product of its digits is 3240, while the sum is 28.
The square root of 134569 is about 366.8364758309.
The cubic root of 134569 is about 51.2446276344.
The spelling of 134569 in words is "one hundred thirty-four thousand, five hundred sixty-nine".