134413421 has 2 divisors, whose sum is σ = 134413422. Its totient is φ = 134413420.

The previous prime is 134413393. The next prime is 134413423. The reversal of 134413421 is 124314431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130210921 + 4202500 = 11411^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 134413421 - 2¹⁴ = 134397037 is a prime.

Together with 134413423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134413423) by changing a digit.

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 as a sum of consecutive naturals, namely, 67206710 + 67206711.

It is an arithmetic number, because the mean of its divisors is an integer number (67206711).

Almost surely, 2^134413421 is an apocalyptic number.

It is an amenable number.

134413421 is a deficient number, since it is larger than the sum of its proper divisors (1).

134413421 is an equidigital number, since it uses as much as digits as its factorization.

134413421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 134413421 is about 11593.6802181188. The cubic root of 134413421 is about 512.2487156785.

Adding to 134413421 its reverse (124314431), we get a palindrome (258727852).

The spelling of 134413421 in words is "one hundred thirty-four million, four hundred thirteen thousand, four hundred twenty-one".