134323421 has 4 divisors (see below), whose sum is σ = 137599644. Its totient is φ = 131047200.

The previous prime is 134323411. The next prime is 134323459. The reversal of 134323421 is 124323431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124323431 = 17 ⋅7313143.

It can be written as a sum of positive squares in 2 ways, for example, as 81252196 + 53071225 = 9014^2 + 7285^2 .

It is a cyclic number.

It is not a de Polignac number, because 134323421 - 2²² = 130129117 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 (134323411) 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, 1638050 + ... + 1638131.

It is an arithmetic number, because the mean of its divisors is an integer number (34399911).

Almost surely, 2^134323421 is an apocalyptic number.

It is an amenable number.

134323421 is a deficient number, since it is larger than the sum of its proper divisors (3276223).

134323421 is an equidigital number, since it uses as much as digits as its factorization.

134323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276222.

The product of its digits is 1728, while the sum is 23.

The square root of 134323421 is about 11589.7981431947. The cubic root of 134323421 is about 512.1343603371.

Adding to 134323421 its reverse (124323431), we get a palindrome (258646852).

The spelling of 134323421 in words is "one hundred thirty-four million, three hundred twenty-three thousand, four hundred twenty-one".