134343421 has 4 divisors (see below), whose sum is σ = 134678844. Its totient is φ = 134008000.

The previous prime is 134343403. The next prime is 134343439. The reversal of 134343421 is 124343431.

134343421 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 is an interprime number because it is at equal distance from previous prime (134343403) and next prime (134343439).

It can be written as a sum of positive squares in 2 ways, for example, as 78676900 + 55666521 = 8870^2 + 7461^2 .

It is a cyclic number.

It is not a de Polignac number, because 134343421 - 2⁹ = 134342909 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 (134343721) 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, 167110 + ... + 167911.

It is an arithmetic number, because the mean of its divisors is an integer number (33669711).

Almost surely, 2^134343421 is an apocalyptic number.

It is an amenable number.

134343421 is a deficient number, since it is larger than the sum of its proper divisors (335423).

134343421 is an equidigital number, since it uses as much as digits as its factorization.

134343421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335422.

The product of its digits is 3456, while the sum is 25.

The square root of 134343421 is about 11590.6609388766. The cubic root of 134343421 is about 512.1597770485.

Adding to 134343421 its reverse (124343431), we get a palindrome (258686852).

It can be divided in two parts, 13 and 4343421, that added together give a palindrome (4343434).

The spelling of 134343421 in words is "one hundred thirty-four million, three hundred forty-three thousand, four hundred twenty-one".