134171440421 has 4 divisors (see below), whose sum is σ = 141233095200. Its totient is φ = 127109785644.

The previous prime is 134171440409. The next prime is 134171440423. The reversal of 134171440421 is 124044171431.

It is a happy number.

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: 124044171431 = 65419 ⋅1896149.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134171440421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134171440423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3530827361 + ... + 3530827398.

It is an arithmetic number, because the mean of its divisors is an integer number (35308273800).

Almost surely, 2^134171440421 is an apocalyptic number.

It is an amenable number.

134171440421 is a deficient number, since it is larger than the sum of its proper divisors (7061654779).

134171440421 is an equidigital number, since it uses as much as digits as its factorization.

134171440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7061654778.

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 134171440421 in words is "one hundred thirty-four billion, one hundred seventy-one million, four hundred forty thousand, four hundred twenty-one".