134403322421 has 4 divisors (see below), whose sum is σ = 134638705344. Its totient is φ = 134167939500.

The previous prime is 134403322409. The next prime is 134403322433. The reversal of 134403322421 is 124223304431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124223304431 = 97 ⋅1280652623.

It is an interprime number because it is at equal distance from previous prime (134403322409) and next prime (134403322433).

It is a cyclic number.

It is not a de Polignac number, because 134403322421 - 2³⁰ = 133329580597 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 (134403322021) 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, 117690605 + ... + 117691746.

It is an arithmetic number, because the mean of its divisors is an integer number (33659676336).

Almost surely, 2^134403322421 is an apocalyptic number.

It is an amenable number.

134403322421 is a deficient number, since it is larger than the sum of its proper divisors (235382923).

134403322421 is an equidigital number, since it uses as much as digits as its factorization.

134403322421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235382922.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 134403322421 its reverse (124223304431), we get a palindrome (258626626852).

The spelling of 134403322421 in words is "one hundred thirty-four billion, four hundred three million, three hundred twenty-two thousand, four hundred twenty-one".