134402005 has 8 divisors (see below), whose sum is σ = 161911512. Its totient is φ = 107102208.

The previous prime is 134401987. The next prime is 134402033. The reversal of 134402005 is 500204431.

It can be written as a sum of positive squares in 4 ways, for example, as 47651409 + 86750596 = 6903^2 + 9314^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134402005 - 2⁹ = 134401493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51012 + ... + 53581.

It is an arithmetic number, because the mean of its divisors is an integer number (20238939).

Almost surely, 2^134402005 is an apocalyptic number.

It is an amenable number.

134402005 is a deficient number, since it is larger than the sum of its proper divisors (27509507).

134402005 is a wasteful number, since it uses less digits than its factorization.

134402005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104855.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 134402005 is about 11593.1878704695. The cubic root of 134402005 is about 512.2342131661.

Adding to 134402005 its reverse (500204431), we get a palindrome (634606436).

The spelling of 134402005 in words is "one hundred thirty-four million, four hundred two thousand, five".