134535421 has 2 divisors, whose sum is σ = 134535422. Its totient is φ = 134535420.

The previous prime is 134535419. The next prime is 134535431. The reversal of 134535421 is 124535431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70375321 + 64160100 = 8389^2 + 8010^2 .

It is an emirp because it is prime and its reverse (124535431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134535421 - 2¹ = 134535419 is a prime.

Together with 134535419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 134535421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134535431) 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, 67267710 + 67267711.

It is an arithmetic number, because the mean of its divisors is an integer number (67267711).

Almost surely, 2^134535421 is an apocalyptic number.

It is an amenable number.

134535421 is a deficient number, since it is larger than the sum of its proper divisors (1).

134535421 is an equidigital number, since it uses as much as digits as its factorization.

134535421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 134535421 is about 11598.9405119606. The cubic root of 134535421 is about 512.4036492279.

The spelling of 134535421 in words is "one hundred thirty-four million, five hundred thirty-five thousand, four hundred twenty-one".