134348021 has 4 divisors (see below), whose sum is σ = 137624844. Its totient is φ = 131071200.

The previous prime is 134348009. The next prime is 134348089. The reversal of 134348021 is 120843431.

134348021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64625521 + 69722500 = 8039^2 + 8350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134348021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134348321) 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, 1638350 + ... + 1638431.

It is an arithmetic number, because the mean of its divisors is an integer number (34406211).

Almost surely, 2^134348021 is an apocalyptic number.

It is an amenable number.

134348021 is a deficient number, since it is larger than the sum of its proper divisors (3276823).

134348021 is an equidigital number, since it uses as much as digits as its factorization.

134348021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276822.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 134348021 is about 11590.8593727989. The cubic root of 134348021 is about 512.1656225353.

The spelling of 134348021 in words is "one hundred thirty-four million, three hundred forty-eight thousand, twenty-one".