134400005 has 4 divisors (see below), whose sum is σ = 161280012. Its totient is φ = 107520000.

The previous prime is 134400001. The next prime is 134400029. The reversal of 134400005 is 500004431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24611521 + 109788484 = 4961^2 + 10478^2 .

It is not a de Polignac number, because 134400005 - 2² = 134400001 is a prime.

It is a super-2 number, since 2×134400005² = 36126722688000050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134400001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13439996 + ... + 13440005.

It is an arithmetic number, because the mean of its divisors is an integer number (40320003).

Almost surely, 2^134400005 is an apocalyptic number.

It is an amenable number.

134400005 is a deficient number, since it is larger than the sum of its proper divisors (26880007).

134400005 is an equidigital number, since it uses as much as digits as its factorization.

134400005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26880006.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 134400005 is about 11593.1016125970. The cubic root of 134400005 is about 512.2316723471.

Adding to 134400005 its reverse (500004431), we get a palindrome (634404436).

The spelling of 134400005 in words is "one hundred thirty-four million, four hundred thousand, five".