134243992441 has 4 divisors (see below), whose sum is σ = 144570453412. Its totient is φ = 123917531472.

The previous prime is 134243992433. The next prime is 134243992451. The reversal of 134243992441 is 144299342431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144299342431 = 1667 ⋅86562293.

It can be written as a sum of positive squares in 2 ways, for example, as 31398068025 + 102845924416 = 177195^2 + 320696^2 .

It is a cyclic number.

It is not a de Polignac number, because 134243992441 - 2³ = 134243992433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134243992391 and 134243992400.

It is not an unprimeable number, because it can be changed into a prime (134243992451) 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, 5163230466 + ... + 5163230491.

It is an arithmetic number, because the mean of its divisors is an integer number (36142613353).

Almost surely, 2^134243992441 is an apocalyptic number.

It is an amenable number.

134243992441 is a deficient number, since it is larger than the sum of its proper divisors (10326460971).

134243992441 is a wasteful number, since it uses less digits than its factorization.

134243992441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326460970.

The product of its digits is 746496, while the sum is 46.

It can be divided in two parts, 13424 and 3992441, that added together give a triangular number (4005865 = T₂₈₃₀).

The spelling of 134243992441 in words is "one hundred thirty-four billion, two hundred forty-three million, nine hundred ninety-two thousand, four hundred forty-one".