134400421513 has 4 divisors (see below), whose sum is σ = 135096796948. Its totient is φ = 133704046080.

The previous prime is 134400421487. The next prime is 134400421517. The reversal of 134400421513 is 315124004431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26979048009 + 107421373504 = 164253^2 + 327752^2 .

It is a cyclic number.

It is not a de Polignac number, because 134400421513 - 2²⁵ = 134366867081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134400421517) 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, 348187428 + ... + 348187813.

It is an arithmetic number, because the mean of its divisors is an integer number (33774199237).

Almost surely, 2^134400421513 is an apocalyptic number.

It is an amenable number.

134400421513 is a deficient number, since it is larger than the sum of its proper divisors (696375435).

134400421513 is an equidigital number, since it uses as much as digits as its factorization.

134400421513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696375434.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 134400421513 its reverse (315124004431), we get a palindrome (449524425944).

The spelling of 134400421513 in words is "one hundred thirty-four billion, four hundred million, four hundred twenty-one thousand, five hundred thirteen".